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241d1398e0
calls can be marked tail. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166405 91177308-0d34-0410-b5e6-96231b3b80d8
28 lines
774 B
LLVM
28 lines
774 B
LLVM
; RUN: opt %s -tailcallelim -S | FileCheck %s
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declare void @use(i8* nocapture, i8* nocapture)
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declare void @boring()
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define i8* @foo(i8* nocapture %A, i1 %cond) {
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; CHECK: tailrecurse:
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; CHECK: %A.tr = phi i8* [ %A, %0 ], [ %B, %cond_true ]
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; CHECK: %cond.tr = phi i1 [ %cond, %0 ], [ false, %cond_true ]
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%B = alloca i8
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; CHECK: %B = alloca i8
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br i1 %cond, label %cond_true, label %cond_false
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; CHECK: br i1 %cond.tr, label %cond_true, label %cond_false
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cond_true:
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; CHECK: cond_true:
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; CHECK: br label %tailrecurse
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call i8* @foo(i8* %B, i1 false)
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ret i8* null
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cond_false:
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; CHECK: cond_false
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call void @use(i8* %A, i8* %B)
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; CHECK: call void @use(i8* %A.tr, i8* %B)
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call void @boring()
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; CHECK: tail call void @boring()
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ret i8* null
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; CHECK: ret i8* null
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}
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