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92a77f4b5e
Under NPM, the asan-globals-md analysis is required but cannot be run
within the asan function pass due to module analyses not being able to
run from a function pass. So this pins all tests using "-asan" to the
legacy PM and adds a corresponding RUN line with
-passes='require<asan-globals-md>,function(asan)'.
Now all tests in Instrumentation/AddressSanitizer pass when
-enable-new-pm is by default on.
Tests were automatically converted using the following python script and
failures were manually fixed up.
import sys
for i in sys.argv:
with open(i, 'r') as f:
s = f.read()
with open(i, 'w') as f:
for l in s.splitlines():
if "RUN:" in l and ' -asan -asan-module ' in l and '\\' not in l:
f.write(l.replace(' -asan -asan-module ', ' -asan -asan-module -enable-new-pm=0 '))
f.write('\n')
f.write(l.replace(' -asan -asan-module ', " -passes='require<asan-globals-md>,function(asan),module(asan-module)' "))
f.write('\n')
elif "RUN:" in l and ' -asan ' in l and '\\' not in l:
f.write(l.replace(' -asan ', ' -asan -enable-new-pm=0 '))
f.write('\n')
f.write(l.replace(' -asan ', " -passes='require<asan-globals-md>,function(asan)' "))
f.write('\n')
else:
f.write(l)
f.write('\n')
See https://bugs.llvm.org/show_bug.cgi?id=46611.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D83921
43 lines
1.8 KiB
LLVM
43 lines
1.8 KiB
LLVM
; Test that global metadata is placed in a separate section on Mach-O platforms,
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; allowing dead stripping to be performed, and that the appropriate runtime
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; routines are invoked.
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; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-globals-live-support=1 -S | FileCheck %s
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; RUN: opt < %s -passes='asan-pipeline' -asan-globals-live-support=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-macosx10.11.0"
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@global = global [1 x i32] zeroinitializer, align 4
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!llvm.asan.globals = !{!0}
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!0 = !{[1 x i32]* @global, !1, !"global", i1 false, i1 false}
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!1 = !{!"test-globals.c", i32 1, i32 5}
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; Find the metadata for @global:
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; CHECK: [[METADATA:@.+]] = internal global {{.*}} @global {{.*}} section "__DATA,__asan_globals,regular"
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; Find the liveness binder for @global and its metadata:
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; CHECK: @__asan_binder_global = internal global {{.*}} @global {{.*}} [[METADATA]] {{.*}} section "__DATA,__asan_liveness,regular,live_support"
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; The binder has to be inserted to llvm.compiler.used to avoid being stripped
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; during LTO.
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; CHECK: @llvm.compiler.used {{.*}} @__asan_binder_global {{.*}} section "llvm.metadata"
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; Test that there is the flag global variable:
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; CHECK: @___asan_globals_registered = common hidden global i64 0
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; Test that __asan_register_image_globals is invoked from the constructor:
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; CHECK-LABEL: define internal void @asan.module_ctor
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; CHECK-NOT: ret
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; CHECK: call void @__asan_register_image_globals(i64 ptrtoint (i64* @___asan_globals_registered to i64))
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; CHECK: ret
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; Test that __asan_unregister_image_globals is invoked from the destructor:
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; CHECK-LABEL: define internal void @asan.module_dtor
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; CHECK-NOT: ret
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; CHECK: call void @__asan_unregister_image_globals(i64 ptrtoint (i64* @___asan_globals_registered to i64))
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; CHECK: ret
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