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63 lines
1.9 KiB
63 lines
1.9 KiB
; RUN: llc < %s -mtriple thumbv7s-apple-darwin -asm-verbose=false | FileCheck %s
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; RUN: llc < %s -mtriple thumbv7s-apple-darwin -asm-verbose=false -print-machineinstrs=if-converter 2>&1 | FileCheck --check-prefix=CHECK-PROB %s
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declare i32 @foo(i32)
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declare i8* @bar(i32, i8*, i8*)
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; Verify that we don't try to iteratively re-ifconvert a block with a
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; (predicated) indirectbr terminator.
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; If we do, we would ignore its fallthrough successor.
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; CHECK-LABEL: test:
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; CHECK: cmp {{.*}}, #21
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; CHECK-NEXT: itt eq
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; CHECK-NEXT: streq.w
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; CHECK-NEXT: moveq pc
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; CHECK-NEXT: LBB{{[0-9_]+}}:
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; CHECK-NEXT: cmp {{.*}}, #42
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; CHECK-NEXT: itt ne
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; CHECK-NEXT: strne.w
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; CHECK-NEXT: movne pc
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; CHECK-NEXT: Ltmp
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; CHECK-NEXT: LBB0_2:
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; CHECK-NEXT: movw r0, #1234
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; CHECK-NEXT: b [[FOOCALL:LBB[0-9_]+]]
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; CHECK-NEXT: Ltmp
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; CHECK-NEXT: LBB{{[0-9_]+}}:
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; CHECK-NEXT: movw r0, #4567
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; CHECK-NEXT: [[FOOCALL]]:
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; CHECK-NEXT: bl _foo
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;
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; CHECK-PROB: BB#0:
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; CHECK-PROB: Successors according to CFG: BB#1({{[0-9a-fx/= ]+}}50.00%) BB#2({{[0-9a-fx/= ]+}}25.00%) BB#4({{[0-9a-fx/= ]+}}25.00%)
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; CHECK-PROB: BB#1:
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; CHECK-PROB: Successors according to CFG: BB#2({{[0-9a-fx/= ]+}}75.00%) BB#4({{[0-9a-fx/= ]+}}25.00%)
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define i32 @test(i32 %a, i32 %a2, i32* %p, i32* %p2) {
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entry:
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%dst1 = call i8* @bar(i32 1, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
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%dst2 = call i8* @bar(i32 2, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
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%dst3 = call i8* @bar(i32 3, i8* blockaddress(@test, %bb1), i8* blockaddress(@test, %bb2))
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%cc1 = icmp eq i32 %a, 21
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br i1 %cc1, label %cc1t, label %cc1f
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cc1t:
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store i32 %a, i32* %p
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indirectbr i8* %dst3, [label %bb1, label %bb2]
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cc1f:
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%cc2 = icmp ne i32 %a2, 42
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br i1 %cc2, label %cc2t, label %bb1
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cc2t:
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store i32 %a, i32* %p2
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indirectbr i8* %dst1, [label %bb1, label %bb2]
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bb1:
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%ret_bb1 = call i32 @foo(i32 1234)
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ret i32 %ret_bb1
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bb2:
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%ret_bb2 = call i32 @foo(i32 4567)
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ret i32 %ret_bb2
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}
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