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llvm-mirror/test/Instrumentation/MemorySanitizer/X86/vararg.ll
Evgeniy Stepanov 827648bd36 [msan] A no-op implementation of VarArg handling.
This stuff is used on platforms where MSan does not have a proper VarArg
implementation (anything other than x86_64 at the moment).

llvm-svn: 182375
2013-05-21 12:27:47 +00:00

16 lines
496 B
LLVM

; RUN: opt < %s -msan -msan-check-access-address=0 -S
; Test that code using va_start can be compiled on i386.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
target triple = "i386-unknown-linux-gnu"
define void @VaStart(i8* %s, ...) {
entry:
%vl = alloca i8*, align 4
%vl1 = bitcast i8** %vl to i8*
call void @llvm.va_start(i8* %vl1)
ret void
}
declare void @llvm.va_start(i8*)