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52 lines
2.2 KiB
52 lines
2.2 KiB
; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -hardware-loops -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ALLOW
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; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -hardware-loops -force-hardware-loop-guard=true -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-ALLOW
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; RUN: opt -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-hardware-loop-phi=true -hardware-loops -S %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-LATCH
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; CHECK-LABEL: not_rotated
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; CHECK-LATCH-NOT: call void @llvm.set.loop.iterations
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; CHECK-LATCH-NOT: call i1 @llvm.loop.decrement
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; CHECK-ALLOW: bb:
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; CHECK-ALLOW: [[COUNT:%[^ ]+]] = add i32 %arg, 1
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; CHECK-ALLOW: br label %bb3
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; CHECK-ALLOW: bb5:
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; CHECK-ALLOW: call void @llvm.set.loop.iterations.i32(i32 [[COUNT]])
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; CHECK-ALLOW: br label %bb7
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; CHECK-ALLOW: [[CMP:%[^ ]+]] = call i1 @llvm.loop.decrement.i32(i32 1)
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; CHECK-ALLOW: br i1 [[CMP]], label %bb10, label %bb16
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define void @not_rotated(i32 %arg, i16* nocapture %arg1, i16 signext %arg2) {
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bb:
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br label %bb3
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bb3: ; preds = %bb16, %bb
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%tmp = phi i32 [ 0, %bb ], [ %tmp17, %bb16 ]
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%tmp4 = icmp eq i32 %tmp, %arg
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br i1 %tmp4, label %bb18, label %bb5
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bb5: ; preds = %bb3
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%tmp6 = mul i32 %tmp, %arg
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br label %bb7
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bb7: ; preds = %bb10, %bb5
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%tmp8 = phi i32 [ %tmp15, %bb10 ], [ 0, %bb5 ]
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%tmp9 = icmp eq i32 %tmp8, %arg
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br i1 %tmp9, label %bb16, label %bb10
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bb10: ; preds = %bb7
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%tmp11 = add i32 %tmp8, %tmp6
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%tmp12 = getelementptr inbounds i16, i16* %arg1, i32 %tmp11
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%tmp13 = load i16, i16* %tmp12, align 2
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%tmp14 = add i16 %tmp13, %arg2
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store i16 %tmp14, i16* %tmp12, align 2
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%tmp15 = add i32 %tmp8, 1
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br label %bb7
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bb16: ; preds = %bb7
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%tmp17 = add i32 %tmp, 1
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br label %bb3
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bb18: ; preds = %bb3
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ret void
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}
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