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