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5d2c01e48a
incomming chain of the RETURN node. The incomming chain must be the outgoing chain of the CALL node. This causes the backend to identify tail calls that are not tail calls. This patch fixes this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73387 91177308-0d34-0410-b5e6-96231b3b80d8
15 lines
466 B
LLVM
15 lines
466 B
LLVM
; RUN: llvm-as < %s | llc -march=x86 -tailcallopt | not grep TAILCALL
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; Bug 4396. This tail call can NOT be optimized.
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declare fastcc i8* @_D3gcx2GC12mallocNoSyncMFmkZPv() nounwind
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define fastcc i8* @_D3gcx2GC12callocNoSyncMFmkZPv() nounwind {
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entry:
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%tmp6 = tail call fastcc i8* @_D3gcx2GC12mallocNoSyncMFmkZPv() ; <i8*> [#uses=2]
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%tmp9 = tail call i8* @memset(i8* %tmp6, i32 0, i64 2) ; <i8*> [#uses=0]
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ret i8* %tmp6
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}
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declare i8* @memset(i8*, i32, i64)
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