forked from OSchip/llvm-project
27 lines
904 B
LLVM
27 lines
904 B
LLVM
; This test checks that non-instrumented allocas stay in the first basic block.
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; Only first-basic-block allocas are considered stack slots, and moving them
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; breaks debug info.
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; RUN: opt < %s -asan -asan-module -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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; Regular alloca, will get instrumented (forced by the ptrtoint below).
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%instrumented = alloca i32, align 4
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; Won't be instrumented because of asan-skip-promotable-allocas.
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%non_instrumented = alloca i32, align 4
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store i32 0, i32* %non_instrumented, align 4
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%value = load i32, i32* %non_instrumented, align 4
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%ptr = ptrtoint i32* %instrumented to i64
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ret i32 %value
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}
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; CHECK: entry:
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; CHECK: %non_instrumented = alloca i32, align 4
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; CHECK: load i32, i32* @__asan_option_detect_stack_use_after_return
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