1; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck %s 2 3target 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" 4target triple = "x86_64-unknown-linux-gnu" 5 6; Test that result origin is directy propagated from the argument, 7; and is not affected by all the literal undef operands. 8; https://code.google.com/p/memory-sanitizer/issues/detail?id=56 9 10define <4 x i32> @Shuffle(<4 x i32> %x) nounwind uwtable sanitize_memory { 11entry: 12 %y = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef> 13 ret <4 x i32> %y 14} 15 16; CHECK-LABEL: @Shuffle( 17; CHECK: [[A:%.*]] = load i32, i32* {{.*}}@__msan_param_origin_tls, 18; CHECK: store i32 [[A]], i32* @__msan_retval_origin_tls 19; CHECK: ret <4 x i32> 20 21 22; Regression test for origin propagation in "select i1, float, float". 23; https://code.google.com/p/memory-sanitizer/issues/detail?id=78 24 25define float @SelectFloat(i1 %b, float %x, float %y) nounwind uwtable sanitize_memory { 26entry: 27 %z = select i1 %b, float %x, float %y 28 ret float %z 29} 30 31; CHECK-LABEL: @SelectFloat( 32; CHECK-NOT: select {{.*}} i32 0, i32 0 33; CHECK: ret float 34