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0b44510f74
This addresses PR30746, <https://llvm.org/bugs/show_bug.cgi?id=30746>. The ASan pass iterates over entry-block instructions and checks each alloca whether it's in NonInstrumentedStaticAllocaVec, which is apparently slow. This patch gathers the instructions to move during visitAllocaInst. Differential Revision: https://reviews.llvm.org/D26380 llvm-svn: 286296
22 lines
731 B
LLVM
22 lines
731 B
LLVM
; Make sure we don't break the IR when moving non-instrumented allocas
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; RUN: opt < %s -asan -asan-module -S | FileCheck %s
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; RUN: opt < %s -asan -asan-module -asan-instrument-dynamic-allocas -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.10.0"
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define i32 @foo() sanitize_address {
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entry:
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%non_instrumented1 = alloca i32, align 4
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%t = load i32, i32* %non_instrumented1, align 4
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%instrumented = alloca i32, align 4
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%ptr = ptrtoint i32* %instrumented to i32
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ret i32 %t
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}
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; CHECK: entry:
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; CHECK: %non_instrumented1 = alloca i32, align 4
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; CHECK: load i32, i32* %non_instrumented1
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; CHECK: load i32, i32* @__asan_option_detect_stack_use_after_return
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