derek.holloway
7502bf64a4
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75 lines
2.7 KiB
LLVM
75 lines
2.7 KiB
LLVM
; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S -passes=msan 2>&1 | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s
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; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -S -passes=msan 2>&1 | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %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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; Check origin instrumentation of stores.
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; Check that debug info for origin propagation code is set correctly.
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@a8 = global i8 0, align 8
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@a4 = global i8 0, align 4
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@a2 = global i8 0, align 2
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@a1 = global i8 0, align 1
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; 8-aligned store => 8-aligned origin store, origin address is not realigned
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define void @Store8(i8 %x) sanitize_memory {
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entry:
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store i8 %x, ptr @a8, align 8
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ret void
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}
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; CHECK-LABEL: @Store8
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; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
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; CHECK: store i32 [[ORIGIN]], {{.*}}, align 8
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; CHECK: ret void
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; 4-aligned store => 4-aligned origin store, origin address is not realigned
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define void @Store4(i8 %x) sanitize_memory {
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entry:
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store i8 %x, ptr @a4, align 4
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ret void
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}
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; CHECK-LABEL: @Store4
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; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
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; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
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; CHECK: ret void
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; 2-aligned store => 4-aligned origin store, origin address is realigned
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define void @Store2(i8 %x) sanitize_memory {
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entry:
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store i8 %x, ptr @a2, align 2
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ret void
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}
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; CHECK-LABEL: @Store2
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; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
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; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
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; CHECK: ret void
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; 1-aligned store => 4-aligned origin store, origin address is realigned
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define void @Store1(i8 %x) sanitize_memory {
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entry:
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store i8 %x, ptr @a1, align 1
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ret void
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}
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; CHECK-LABEL: @Store1
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; CHECK-ORIGINS1: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN0:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK-ORIGINS2: [[ORIGIN:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 [[ORIGIN0]])
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; CHECK: store i32 [[ORIGIN]], {{.*}}, align 4
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; CHECK: ret void
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