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65b081551d
* Don't instrument promotable dynamic allocas: We already have a test that checks that promotable dynamic allocas are ignored, as well as static promotable allocas. Make sure this test will still pass if/when we enable dynamic alloca instrumentation by default. * Handle lifetime intrinsics before handling dynamic allocas: lifetime intrinsics may refer to dynamic allocas, so we need to emit instrumentation before these dynamic allocas would be replaced. Differential Revision: http://reviews.llvm.org/D12704 llvm-svn: 251045
41 lines
1.2 KiB
LLVM
41 lines
1.2 KiB
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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; RUN: opt < %s -asan -asan-module -asan-instrument-allocas=1 -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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; Won't be instrumented because of asan-skip-promotable-allocas.
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%non_instrumented1 = alloca i32, align 4
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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_instrumented2 = alloca i32, align 4
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br label %bb0
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bb0:
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; Won't be instrumented because of asan-skip-promotable-allocas.
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%non_instrumented3 = alloca i32, align 4
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%ptr = ptrtoint i32* %instrumented to i32
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br label %bb1
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bb1:
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ret i32 %ptr
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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: %non_instrumented2 = alloca i32, align 4
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; CHECK: load i32, i32* @__asan_option_detect_stack_use_after_return
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; CHECK: bb0:
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; CHECK: %non_instrumented3 = alloca i32, align 4
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