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513 lines
20 KiB
513 lines
20 KiB
4 months ago
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; RUN: llc -mtriple=thumbv8.1m.main -O0 -mattr=+lob -disable-arm-loloops=false -stop-before=arm-low-overhead-loops %s -o - | FileCheck %s --check-prefix=CHECK-MID
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; RUN: llc -mtriple=thumbv8.1m.main -O0 -mattr=+lob -disable-arm-loloops=false -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK-END
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; Test that the branch targets are correct after isel, even though the loop
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; will sometimes be reverted anyway.
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; CHECK-MID: name: check_loop_dec_brcond_combine
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; CHECK-MID: bb.2.for.body:
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; CHECK-MID: renamable $lr = t2LoopDec killed renamable $lr, 1
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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; CHECK-END: .LBB0_1:
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; CHECK-END: b .LBB0_3
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; CHECK-END: .LBB0_2:
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; CHECK-END: subs.w lr, lr, #1
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; CHECK-END: bne .LBB0_3
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; CHECK-END: b .LBB0_4
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; CHECK-END: .LBB0_3:
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; CHECK-END: b .LBB0_2
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define void @check_loop_dec_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
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%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
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%cmp = icmp ne i32 %count.next, 0
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br i1 %cmp, label %for.header, label %for.cond.cleanup
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for.header:
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%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
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%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
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%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
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%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
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br label %for.body
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for.cond.cleanup:
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ret void
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}
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; CHECK-MID: name: check_loop_dec_ugt_brcond_combine
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; CHECK-MID: bb.2.for.body:
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; CHECK-MID: renamable $lr = t2LoopDec killed renamable $lr, 1
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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define void @check_loop_dec_ugt_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
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%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
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%cmp = icmp ugt i32 %count.next, 0
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br i1 %cmp, label %for.header, label %for.cond.cleanup
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for.header:
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%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
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%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
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%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
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%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
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br label %for.body
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for.cond.cleanup:
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ret void
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}
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; CHECK-MID: name: check_loop_dec_ult_brcond_combine
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; CHECK-MID: bb.2.for.body:
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; CHECK-MID: renamable $lr = t2LoopDec killed renamable $lr, 1
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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define void @check_loop_dec_ult_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
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%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
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%cmp = icmp ult i32 %count.next, 1
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br i1 %cmp, label %for.cond.cleanup, label %for.header
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for.header:
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%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
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%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
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%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
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%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
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br label %for.body
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for.cond.cleanup:
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ret void
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}
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; CHECK-MID: name: check_loop_dec_ult_xor_brcond_combine
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; CHECK-MIO: bb.2.for.body:
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: tB %bb.4, 14
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; CHECk-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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define void @check_loop_dec_ult_xor_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
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%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
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%cmp = icmp ult i32 %count.next, 1
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%negate = xor i1 %cmp, 1
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br i1 %negate, label %for.header, label %for.cond.cleanup
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for.header:
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%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
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%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
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%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
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%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
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br label %for.body
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for.cond.cleanup:
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ret void
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}
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; CHECK-MID: name: check_loop_dec_sgt_brcond_combine
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; CHECK-MIO: bb.2.for.body:
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: tB %bb.4, 14
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; CHECk-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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define void @check_loop_dec_sgt_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
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%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
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%cmp = icmp sgt i32 %count.next, 0
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br i1 %cmp, label %for.header, label %for.cond.cleanup
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for.header:
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%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
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%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
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%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
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%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
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br label %for.body
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for.cond.cleanup:
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ret void
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}
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; CHECK-MID: name: check_loop_dec_sge_brcond_combine
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; CHECK-MIO: bb.2.for.body:
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; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
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; CHECK-MID: tB %bb.4, 14
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; CHECk-MID: bb.3.for.header:
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; CHECK-MID: tB %bb.2
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define void @check_loop_dec_sge_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
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entry:
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%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
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br label %for.body.preheader
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for.body.preheader:
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%scevgep = getelementptr i32, i32* %a, i32 -1
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%scevgep4 = getelementptr i32, i32* %c, i32 -1
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%scevgep8 = getelementptr i32, i32* %b, i32 -1
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br label %for.header
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for.body:
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%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
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%ld1 = load i32, i32* %scevgep11, align 4
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%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
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%ld2 = load i32, i32* %scevgep7, align 4
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%mul = mul nsw i32 %ld2, %ld1
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%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
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store i32 %mul, i32* %scevgep3, align 4
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%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
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%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
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|
|
%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp sge i32 %count.next, 1
|
||
|
|
br i1 %cmp, label %for.header, label %for.cond.cleanup
|
||
|
|
|
||
|
|
for.header:
|
||
|
|
%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
|
||
|
|
%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
|
||
|
|
%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
|
||
|
|
%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: name: check_loop_dec_sge_xor_brcond_combine
|
||
|
|
; CHECK-MIO: bb.2.for.body:
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
|
||
|
|
; CHECK-MID: tB %bb.4, 14
|
||
|
|
; CHECk-MID: bb.3.for.header:
|
||
|
|
; CHECK-MID: tB %bb.2
|
||
|
|
define void @check_loop_dec_sge_xor_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
|
||
|
|
br label %for.body.preheader
|
||
|
|
|
||
|
|
for.body.preheader:
|
||
|
|
%scevgep = getelementptr i32, i32* %a, i32 -1
|
||
|
|
%scevgep4 = getelementptr i32, i32* %c, i32 -1
|
||
|
|
%scevgep8 = getelementptr i32, i32* %b, i32 -1
|
||
|
|
br label %for.header
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%ld1 = load i32, i32* %scevgep11, align 4
|
||
|
|
%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%ld2 = load i32, i32* %scevgep7, align 4
|
||
|
|
%mul = mul nsw i32 %ld2, %ld1
|
||
|
|
%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
store i32 %mul, i32* %scevgep3, align 4
|
||
|
|
%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp sge i32 %count.next, 1
|
||
|
|
%negated = xor i1 %cmp, 1
|
||
|
|
br i1 %negated, label %for.cond.cleanup, label %for.header
|
||
|
|
|
||
|
|
for.header:
|
||
|
|
%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
|
||
|
|
%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
|
||
|
|
%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
|
||
|
|
%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: name: check_loop_dec_uge_brcond_combine
|
||
|
|
; CHECK-MIO: bb.2.for.body:
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
|
||
|
|
; CHECK-MID: tB %bb.4, 14
|
||
|
|
; CHECk-MID: bb.3.for.header:
|
||
|
|
; CHECK-MID: tB %bb.2
|
||
|
|
define void @check_loop_dec_uge_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
|
||
|
|
br label %for.body.preheader
|
||
|
|
|
||
|
|
for.body.preheader:
|
||
|
|
%scevgep = getelementptr i32, i32* %a, i32 -1
|
||
|
|
%scevgep4 = getelementptr i32, i32* %c, i32 -1
|
||
|
|
%scevgep8 = getelementptr i32, i32* %b, i32 -1
|
||
|
|
br label %for.header
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%ld1 = load i32, i32* %scevgep11, align 4
|
||
|
|
%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%ld2 = load i32, i32* %scevgep7, align 4
|
||
|
|
%mul = mul nsw i32 %ld2, %ld1
|
||
|
|
%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
store i32 %mul, i32* %scevgep3, align 4
|
||
|
|
%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp uge i32 %count.next, 1
|
||
|
|
br i1 %cmp, label %for.header, label %for.cond.cleanup
|
||
|
|
|
||
|
|
for.header:
|
||
|
|
%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
|
||
|
|
%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
|
||
|
|
%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
|
||
|
|
%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: name: check_loop_dec_uge_xor_brcond_combine
|
||
|
|
; CHECK-MIO: bb.2.for.body:
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.3
|
||
|
|
; CHECK-MID: tB %bb.4, 14
|
||
|
|
; CHECk-MID: bb.3.for.header:
|
||
|
|
; CHECK-MID: tB %bb.2
|
||
|
|
define void @check_loop_dec_uge_xor_brcond_combine(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%start = call i32 @llvm.start.loop.iterations.i32(i32 %N)
|
||
|
|
br label %for.body.preheader
|
||
|
|
|
||
|
|
for.body.preheader:
|
||
|
|
%scevgep = getelementptr i32, i32* %a, i32 -1
|
||
|
|
%scevgep4 = getelementptr i32, i32* %c, i32 -1
|
||
|
|
%scevgep8 = getelementptr i32, i32* %b, i32 -1
|
||
|
|
br label %for.header
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%scevgep11 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%ld1 = load i32, i32* %scevgep11, align 4
|
||
|
|
%scevgep7 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%ld2 = load i32, i32* %scevgep7, align 4
|
||
|
|
%mul = mul nsw i32 %ld2, %ld1
|
||
|
|
%scevgep3 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
store i32 %mul, i32* %scevgep3, align 4
|
||
|
|
%scevgep2 = getelementptr i32, i32* %lsr.iv1, i32 1
|
||
|
|
%scevgep6 = getelementptr i32, i32* %lsr.iv5, i32 1
|
||
|
|
%scevgep10 = getelementptr i32, i32* %lsr.iv9, i32 1
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp uge i32 %count.next, 1
|
||
|
|
%negated = xor i1 %cmp, 1
|
||
|
|
br i1 %negated, label %for.cond.cleanup, label %for.header
|
||
|
|
|
||
|
|
for.header:
|
||
|
|
%lsr.iv9 = phi i32* [ %scevgep8, %for.body.preheader ], [ %scevgep10, %for.body ]
|
||
|
|
%lsr.iv5 = phi i32* [ %scevgep4, %for.body.preheader ], [ %scevgep6, %for.body ]
|
||
|
|
%lsr.iv1 = phi i32* [ %scevgep, %for.body.preheader ], [ %scevgep2, %for.body ]
|
||
|
|
%count = phi i32 [ %start, %for.body.preheader ], [ %count.next, %for.body ]
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.cond.cleanup:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: check_negated_xor_wls
|
||
|
|
; CHECK-MID: t2WhileLoopStart renamable $r2, %bb.3
|
||
|
|
; CHECK-MID: tB %bb.1
|
||
|
|
; CHECK-MID: bb.1.while.body.preheader:
|
||
|
|
; CHECK-MID: $lr = t2LoopDec killed renamable $lr, 1
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.2
|
||
|
|
; CHECk-MID: tB %bb.3
|
||
|
|
; CHECK-MID: bb.3.while.end:
|
||
|
|
define void @check_negated_xor_wls(i16* nocapture %a, i16* nocapture readonly %b, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%wls = call i1 @llvm.test.set.loop.iterations.i32(i32 %N)
|
||
|
|
%xor = xor i1 %wls, 1
|
||
|
|
br i1 %xor, label %while.end, label %while.body.preheader
|
||
|
|
|
||
|
|
while.body.preheader:
|
||
|
|
br label %while.body
|
||
|
|
|
||
|
|
while.body:
|
||
|
|
%a.addr.06 = phi i16* [ %incdec.ptr1, %while.body ], [ %a, %while.body.preheader ]
|
||
|
|
%b.addr.05 = phi i16* [ %incdec.ptr, %while.body ], [ %b, %while.body.preheader ]
|
||
|
|
%count = phi i32 [ %N, %while.body.preheader ], [ %count.next, %while.body ]
|
||
|
|
%incdec.ptr = getelementptr inbounds i16, i16* %b.addr.05, i32 1
|
||
|
|
%ld.b = load i16, i16* %b.addr.05, align 2
|
||
|
|
%incdec.ptr1 = getelementptr inbounds i16, i16* %a.addr.06, i32 1
|
||
|
|
store i16 %ld.b, i16* %a.addr.06, align 2
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp ne i32 %count.next, 0
|
||
|
|
br i1 %cmp, label %while.body, label %while.end
|
||
|
|
|
||
|
|
while.end:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: check_negated_cmp_wls
|
||
|
|
; CHECK-MID: t2WhileLoopStart renamable $r2, %bb.3
|
||
|
|
; CHECK-MID: tB %bb.1
|
||
|
|
; CHECK-MID: bb.1.while.body.preheader:
|
||
|
|
; CHECK-MID: $lr = t2LoopDec killed renamable $lr, 1
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.2
|
||
|
|
; CHECk-MID: tB %bb.3
|
||
|
|
; CHECK-MID: bb.3.while.end:
|
||
|
|
define void @check_negated_cmp_wls(i16* nocapture %a, i16* nocapture readonly %b, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%wls = call i1 @llvm.test.set.loop.iterations.i32(i32 %N)
|
||
|
|
%cmp = icmp ne i1 %wls, 1
|
||
|
|
br i1 %cmp, label %while.end, label %while.body.preheader
|
||
|
|
|
||
|
|
while.body.preheader:
|
||
|
|
br label %while.body
|
||
|
|
|
||
|
|
while.body:
|
||
|
|
%a.addr.06 = phi i16* [ %incdec.ptr1, %while.body ], [ %a, %while.body.preheader ]
|
||
|
|
%b.addr.05 = phi i16* [ %incdec.ptr, %while.body ], [ %b, %while.body.preheader ]
|
||
|
|
%count = phi i32 [ %N, %while.body.preheader ], [ %count.next, %while.body ]
|
||
|
|
%incdec.ptr = getelementptr inbounds i16, i16* %b.addr.05, i32 1
|
||
|
|
%ld.b = load i16, i16* %b.addr.05, align 2
|
||
|
|
%incdec.ptr1 = getelementptr inbounds i16, i16* %a.addr.06, i32 1
|
||
|
|
store i16 %ld.b, i16* %a.addr.06, align 2
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp.1 = icmp ne i32 %count.next, 0
|
||
|
|
br i1 %cmp.1, label %while.body, label %while.end
|
||
|
|
|
||
|
|
while.end:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK-MID: check_negated_reordered_wls
|
||
|
|
; CHECK-MID: bb.1.while.body.preheader:
|
||
|
|
; CHECK-MID: tB %bb.2
|
||
|
|
; CHECK-MID: bb.2.while.body:
|
||
|
|
; CHECK-MID: t2LoopDec killed renamable $lr, 1
|
||
|
|
; CHECK-MID: t2LoopEnd killed renamable $lr, %bb.2
|
||
|
|
; CHECK-MID: tB %bb.4
|
||
|
|
; CHECK-MID: bb.3.while:
|
||
|
|
; CHECK-MID: t2WhileLoopStart {{.*}}, %bb.4
|
||
|
|
; CHECK-MID: bb.4.while.end
|
||
|
|
define void @check_negated_reordered_wls(i16* nocapture %a, i16* nocapture readonly %b, i32 %N) {
|
||
|
|
entry:
|
||
|
|
br label %while
|
||
|
|
|
||
|
|
while.body.preheader:
|
||
|
|
br label %while.body
|
||
|
|
|
||
|
|
while.body:
|
||
|
|
%a.addr.06 = phi i16* [ %incdec.ptr1, %while.body ], [ %a, %while.body.preheader ]
|
||
|
|
%b.addr.05 = phi i16* [ %incdec.ptr, %while.body ], [ %b, %while.body.preheader ]
|
||
|
|
%count = phi i32 [ %N, %while.body.preheader ], [ %count.next, %while.body ]
|
||
|
|
%incdec.ptr = getelementptr inbounds i16, i16* %b.addr.05, i32 1
|
||
|
|
%ld.b = load i16, i16* %b.addr.05, align 2
|
||
|
|
%incdec.ptr1 = getelementptr inbounds i16, i16* %a.addr.06, i32 1
|
||
|
|
store i16 %ld.b, i16* %a.addr.06, align 2
|
||
|
|
%count.next = call i32 @llvm.loop.decrement.reg.i32.i32.i32(i32 %count, i32 1)
|
||
|
|
%cmp = icmp ne i32 %count.next, 0
|
||
|
|
br i1 %cmp, label %while.body, label %while.end
|
||
|
|
|
||
|
|
while:
|
||
|
|
%wls = call i1 @llvm.test.set.loop.iterations.i32(i32 %N)
|
||
|
|
%xor = xor i1 %wls, 1
|
||
|
|
br i1 %xor, label %while.end, label %while.body.preheader
|
||
|
|
|
||
|
|
while.end:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare i32 @llvm.start.loop.iterations.i32(i32)
|
||
|
|
declare i1 @llvm.test.set.loop.iterations.i32(i32)
|
||
|
|
declare i32 @llvm.loop.decrement.reg.i32.i32.i32(i32, i32)
|