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Add a test for i1 zeroext arguments on x86-64. We currently generate code that

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conforms to the ABI, but DAGCombine could in theory recognize the sequence of
zext asserts and truncates and generate incorrect code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127754 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-03-16 20:15:44 +00:00
parent bb057453db
commit 0a00615b34
1 changed files with 23 additions and 0 deletions
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23
test/CodeGen/X86/bool-args-zext.ll Normal file
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@ -0,0 +1,23 @@
; RUN: llc < %s -march=x86-64 | FileCheck %s
; CHECK: @bar1
; CHECK: movzbl
; CHECK: callq
define void @bar1(i1 zeroext %v1) nounwind ssp {
entry:
%conv = zext i1 %v1 to i32
%call = tail call i32 (...)* @foo(i32 %conv) nounwind
ret void
}
; CHECK: @bar2
; CHECK-NOT: movzbl
; CHECK: callq
define void @bar2(i8 zeroext %v1) nounwind ssp {
entry:
%conv = zext i8 %v1 to i32
%call = tail call i32 (...)* @foo(i32 %conv) nounwind
ret void
}
declare i32 @foo(...)