From 63cca4e2fd4dd70e54055c4d34d858f810e0bd44 Mon Sep 17 00:00:00 2001 From: Evgeniy Stepanov Date: Fri, 14 Dec 2012 13:43:11 +0000 Subject: [msan] Origin stores and loads do not need explicit alignment. Origin address is always 4 byte aligned, and the access type is always i32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170199 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Instrumentation/MemorySanitizer/msan_basic.ll | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'test/Instrumentation') diff --git a/test/Instrumentation/MemorySanitizer/msan_basic.ll b/test/Instrumentation/MemorySanitizer/msan_basic.ll index 3228863193..b6dcd16662 100644 --- a/test/Instrumentation/MemorySanitizer/msan_basic.ll +++ b/test/Instrumentation/MemorySanitizer/msan_basic.ll @@ -8,7 +8,9 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3 ; Check the presence and the linkage type of __msan_track_origins ; CHECK: @__msan_track_origins = weak_odr constant i32 0 + ; Check instrumentation of stores + define void @Store(i32* nocapture %p, i32 %x) nounwind uwtable { entry: store i32 %x, i32* %p, align 4 @@ -33,6 +35,34 @@ entry: ; CHECK-ORIGINS: ret void +; Check instrumentation of aligned stores +; Shadow store has the same alignment as the original store; origin store +; does not specify explicit alignment. + +define void @AlignedStore(i32* nocapture %p, i32 %x) nounwind uwtable { +entry: + store i32 %x, i32* %p, align 32 + ret void +} + +; CHECK: @AlignedStore +; CHECK: load {{.*}} @__msan_param_tls +; CHECK: store {{.*}} align 32 +; CHECK: store {{.*}} align 32 +; CHECK: ret void +; CHECK-ORIGINS: @AlignedStore +; CHECK-ORIGINS: load {{.*}} @__msan_param_tls +; CHECK-ORIGINS: store {{.*}} align 32 +; CHECK-ORIGINS: icmp +; CHECK-ORIGINS: br i1 +; CHECK-ORIGINS: