1; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S          \
2; RUN: -passes=msan 2>&1 | FileCheck %s
3; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck %s
4
5target 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"
6target triple = "x86_64-unknown-linux-gnu"
7
8; Test that result origin is directy propagated from the argument,
9; and is not affected by all the literal undef operands.
10; https://github.com/google/sanitizers/issues/559
11
12define <4 x i32> @Shuffle(<4 x i32> %x) nounwind uwtable sanitize_memory {
13entry:
14  %y = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
15  ret <4 x i32> %y
16}
17
18; CHECK-LABEL: @Shuffle(
19; CHECK: [[A:%.*]] = load i32, i32* {{.*}}@__msan_param_origin_tls,
20; CHECK: store i32 [[A]], i32* @__msan_retval_origin_tls
21; CHECK: ret <4 x i32>
22
23
24; Regression test for origin propagation in "select i1, float, float".
25; https://github.com/google/sanitizers/issues/581
26
27define float @SelectFloat(i1 %b, float %x, float %y) nounwind uwtable sanitize_memory {
28entry:
29  %z = select i1 %b, float %x, float %y
30  ret float %z
31}
32
33; CHECK-LABEL: @SelectFloat(
34; CHECK-NOT: select {{.*}} i32 0, i32 0
35; CHECK: ret float
36