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PPC32 va_list is an actual structure so va_copy needs to copy the whole

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structure not just a pointer. This implements that and thus fixes va_copy
on PPC32. Fixes #15286. Both bug and patch by Florian Zeitz!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187158 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Roman Divacky
2013-07-25 21:36:47 +00:00
parent 3367ed3220
commit 6ebf55d811
3 changed files with 47 additions and 1 deletions
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test/CodeGen/PowerPC/ppc32-vacopy.ll
+24
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@@ -0,0 +1,24 @@
; RUN: llc -mtriple="powerpc-unknown-linux-gnu" < %s | FileCheck %s
; PR15286
%va_list = type {i8, i8, i16, i8*, i8*}
declare void @llvm.va_copy(i8*, i8*)
define void @test_vacopy() nounwind {
entry:
%0 = alloca %va_list
%1 = alloca %va_list
%2 = bitcast %va_list* %0 to i8*
%3 = bitcast %va_list* %1 to i8*
call void @llvm.va_copy(i8* %3, i8* %2)
ret void
}
; CHECK: test_vacopy:
; CHECK: lwz [[REG1:[0-9]+]], {{.*}}
; CHECK: lwz [[REG2:[0-9]+]], {{.*}}
; CHECK: lwz [[REG3:[0-9]+]], {{.*}}
; CHECK: stw [[REG1]], {{.*}}
; CHECK: stw [[REG2]], {{.*}}
; CHECK: stw [[REG3]], {{.*}}