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45 lines
1.2 KiB
LLVM
45 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -simplifycfg < %s | FileCheck %s
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; RUN: opt -S -passes=simplify-cfg < %s | FileCheck %s
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declare void @foo() convergent
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; FIXME: We should not be inserting a PR Phi here.
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define i32 @test_01(i32 %a) {
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; CHECK-LABEL: @test_01(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[A:%.*]], 0
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; CHECK-NEXT: br i1 [[COND]], label [[MERGE:%.*]], label [[IF_FALSE:%.*]]
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; CHECK: if.false:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[COND_PR:%.*]] = phi i1 [ [[COND]], [[IF_FALSE]] ], [ true, [[ENTRY:%.*]] ]
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br i1 [[COND_PR]], label [[EXIT:%.*]], label [[IF_FALSE_2:%.*]]
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; CHECK: if.false.2:
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; CHECK-NEXT: call void @foo()
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: ret i32 [[A]]
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;
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entry:
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%cond = icmp eq i32 %a, 0
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br i1 %cond, label %merge, label %if.false
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if.false:
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call void @foo()
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br label %merge
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merge:
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call void @foo()
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br i1 %cond, label %exit, label %if.false.2
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if.false.2:
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call void @foo()
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br label %exit
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exit:
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ret i32 %a
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}
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