41d5033eb1
This enabled opaque pointers by default in LLVM. The effect of this is twofold: * If IR that contains *neither* explicit ptr nor %T* types is passed to tools, we will now use opaque pointer mode, unless -opaque-pointers=0 has been explicitly passed. * Users of LLVM as a library will now default to opaque pointers. It is possible to opt-out by calling setOpaquePointers(false) on LLVMContext. A cmake option to toggle this default will not be provided. Frontends or other tools that want to (temporarily) keep using typed pointers should disable opaque pointers via LLVMContext. Differential Revision: https://reviews.llvm.org/D126689
35 lines
1.2 KiB
LLVM
35 lines
1.2 KiB
LLVM
; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S \
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; RUN: -passes=msan 2>&1 | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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; Test that result origin is directy propagated from the argument,
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; and is not affected by all the literal undef operands.
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; https://github.com/google/sanitizers/issues/559
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define <4 x i32> @Shuffle(<4 x i32> %x) nounwind uwtable sanitize_memory {
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entry:
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%y = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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ret <4 x i32> %y
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}
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; CHECK-LABEL: @Shuffle(
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; CHECK: [[A:%.*]] = load i32, ptr @__msan_param_origin_tls
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; CHECK: store i32 [[A]], ptr @__msan_retval_origin_tls
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; CHECK: ret <4 x i32>
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; Regression test for origin propagation in "select i1, float, float".
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; https://github.com/google/sanitizers/issues/581
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define float @SelectFloat(i1 %b, float %x, float %y) nounwind uwtable sanitize_memory {
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entry:
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%z = select i1 %b, float %x, float %y
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ret float %z
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}
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; CHECK-LABEL: @SelectFloat(
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; CHECK-NOT: select {{.*}} i32 0, i32 0
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; CHECK: ret float
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