c6b5a25eeb
The current naming scheme adds the `dfs$` prefix to all DFSan-instrumented functions. This breaks mangling and prevents stack trace printers and other tools from automatically demangling function names. This new naming scheme is mangling-compatible, with the `.dfsan` suffix being a vendor-specific suffix: https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling-structure With this fix, demangling utils would work out-of-the-box. Reviewed By: stephan.yichao.zhao Differential Revision: https://reviews.llvm.org/D104494
31 lines
1.3 KiB
LLVM
31 lines
1.3 KiB
LLVM
; RUN: opt < %s -dfsan -dfsan-args-abi -dfsan-debug-nonzero-labels -S | 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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; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
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; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
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declare i32 @g()
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; CHECK: define { i32, i[[#SBITS]] } @f.dfsan(i32 %0, i32 %1, i[[#SBITS]] %2, i[[#SBITS]] %3)
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define i32 @f(i32, i32) {
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; CHECK: [[LOCALLABELALLOCA:%.*]] = alloca i[[#SBITS]]
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%i = alloca i32
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; CHECK: [[ARGCMP1:%.*]] = icmp ne i[[#SBITS]] %3, 0
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; CHECK: br i1 [[ARGCMP1]]
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; CHECK: [[ARGCMP2:%.*]] = icmp ne i[[#SBITS]] %2, 0
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; CHECK: br i1 [[ARGCMP2]]
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%x = add i32 %0, %1
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store i32 %x, i32* %i
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; CHECK: [[CALL:%.*]] = call { i32, i[[#SBITS]] } @g.dfsan()
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; CHECK: [[CALLLABEL:%.*]] = extractvalue { i32, i[[#SBITS]] } [[CALL]], 1
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; CHECK: [[CALLCMP:%.*]] = icmp ne i[[#SBITS]] [[CALLLABEL]], 0
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; CHECK: br i1 [[CALLCMP]]
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%call = call i32 @g()
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; CHECK: [[LOCALLABEL:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[LOCALLABELALLOCA]]
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; CHECK: [[LOCALCMP:%.*]] = icmp ne i[[#SBITS]] [[LOCALLABEL]], 0
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; CHECK: br i1 [[LOCALCMP]]
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%load = load i32, i32* %i
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ret i32 %load
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}
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