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Diffstat (limited to 'test/Instrumentation/MemorySanitizer/byval-alignment.ll')
| -rw-r--r-- | test/Instrumentation/MemorySanitizer/byval-alignment.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Instrumentation/MemorySanitizer/byval-alignment.ll b/test/Instrumentation/MemorySanitizer/byval-alignment.ll new file mode 100644 index 0000000..43e204a --- /dev/null +++ b/test/Instrumentation/MemorySanitizer/byval-alignment.ll @@ -0,0 +1,20 @@ +; Test that copy alignment for byval arguments is limited by param-tls slot alignment. + +; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +%struct.S = type { i64, i64, i64, [8 x i8] } + +; CHECK: [[A:%.*]] = bitcast i64* {{.*}} add {{.*}} ptrtoint {{.*}} @__msan_param_tls {{.*}} i64 8) +; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[A]], i8* {{.*}}, i64 32, i32 8, i1 false) + +define void @Caller() sanitize_memory { +entry: + %agg.tmp = alloca %struct.S, align 16 + call void @Callee(i32 1, %struct.S* byval align 16 %agg.tmp) + ret void +} + +declare void @Callee(i32, %struct.S* byval align 16) |