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[msan] Fix argument shadow alignment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182771 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov
2013-05-28 13:07:43 +00:00
parent 988005ab49
commit 9903f75bf6
2 changed files with 51 additions and 4 deletions
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40
test/Instrumentation/MemorySanitizer/msan_basic.ll
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@@ -1,5 +1,7 @@
; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s
; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK-ORIGINS %s
; RUN: opt < %s -msan -msan-check-access-address=1 -S | FileCheck %s -check-prefix=CHECK-AA
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@@ -633,3 +635,41 @@ declare void @bar()
; CHECK: store {{.*}} @__msan_retval_tls
; CHECK-NOT: @__msan_warning
; CHECK: ret i32
; Test argument shadow alignment
define <2 x i64> @ArgumentShadowAlignment(i64 %a, <2 x i64> %b) sanitize_memory {
entry:
ret <2 x i64> %b
}
; CHECK: @ArgumentShadowAlignment
; CHECK: load <2 x i64>* {{.*}} @__msan_param_tls {{.*}}, align 8
; CHECK: store <2 x i64> {{.*}} @__msan_retval_tls {{.*}}, align 8
; CHECK: ret <2 x i64>
; Test byval argument shadow alignment
define <2 x i64> @ByValArgumentShadowLargeAlignment(<2 x i64>* byval %p) sanitize_memory {
entry:
%x = load <2 x i64>* %p
ret <2 x i64> %x
}
; CHECK-AA: @ByValArgumentShadowLargeAlignment
; CHECK-AA: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* {{.*}}, i64 16, i32 8, i1 false)
; CHECK-AA: ret <2 x i64>
define i16 @ByValArgumentShadowSmallAlignment(i16* byval %p) sanitize_memory {
entry:
%x = load i16* %p
ret i16 %x
}
; CHECK-AA: @ByValArgumentShadowSmallAlignment
; CHECK-AA: call void @llvm.memcpy.p0i8.p0i8.i64(i8* {{.*}}, i8* {{.*}}, i64 2, i32 2, i1 false)
; CHECK-AA: ret i16