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llvm-project/llvm/test/Instrumentation/DataFlowSanitizer/debug-nonzero-labels.ll

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[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; RUN: opt < %s -dfsan -dfsan-debug-nonzero-labels -S | FileCheck %s
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
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"
Add target triples to all dfsan tests. llvm-svn: 223536
2014-12-06 06:32:30 +08:00
target triple = "x86_64-unknown-linux-gnu"
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
[dfsan] Remove hard-coded shadow width in more tests As a preparation step for fast8 support, we need to update the tests to pass in both modes. That requires generalizing the shadow width and remove any hard coded references that assume it's always 2 bytes. Reviewed By: stephan.yichao.zhao Differential Revision: https://reviews.llvm.org/D97884
2021-03-04 04:30:20 +08:00
; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
declare i32 @g()
[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; CHECK: define i32 @f.dfsan(i32 %0, i32 %1)
[dfsan] Fix non-determinism bug in non-zero label check annotator. We now use a std::vector instead of a DenseSet to store the list of label checks so that we can iterate over it deterministically. llvm-svn: 216255
2014-08-22 09:18:18 +08:00
define i32 @f(i32, i32) {
[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; CHECK: [[ARGLABEL1:%.*]] = load i[[#SBITS]], {{.*}} @__dfsan_arg_tls
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
%i = alloca i32
[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; CHECK: [[ARGCMP1:%.*]] = icmp ne i[[#SBITS]] [[ARGLABEL1]], 0
[dfsan] Fix non-determinism bug in non-zero label check annotator. We now use a std::vector instead of a DenseSet to store the list of label checks so that we can iterate over it deterministically. llvm-svn: 216255
2014-08-22 09:18:18 +08:00
; CHECK: br i1 [[ARGCMP1]]
[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; CHECK: [[ARGLABEL2:%.*]] = load i[[#SBITS]], {{.*}} @__dfsan_arg_tls
; CHECK: [[LOCALLABELALLOCA:%.*]] = alloca i[[#SBITS]]
; CHECK: [[ARGCMP2:%.*]] = icmp ne i[[#SBITS]] [[ARGLABEL2]], 0
[dfsan] Fix non-determinism bug in non-zero label check annotator. We now use a std::vector instead of a DenseSet to store the list of label checks so that we can iterate over it deterministically. llvm-svn: 216255
2014-08-22 09:18:18 +08:00
; CHECK: br i1 [[ARGCMP2]]
%x = add i32 %0, %1
store i32 %x, i32* %i
[DFSan] Remove -dfsan-args-abi support in favor of TLS. ArgsABI was originally added in https://reviews.llvm.org/D965 Current benchmarking does not show a significant difference. There is no need to maintain both ABIs. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D111097
2021-10-05 04:31:18 +08:00
; CHECK: [[CALL:%.*]] = call i32 @g.dfsan()
; CHECK: [[RETLABEL:%.*]] = load i[[#SBITS]], {{.*}} @__dfsan_retval_tls
; CHECK: [[CALLCMP:%.*]] = icmp ne i[[#SBITS]] [[RETLABEL]], 0
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
; CHECK: br i1 [[CALLCMP]]
%call = call i32 @g()
[dfsan] Remove hard-coded shadow width in more tests As a preparation step for fast8 support, we need to update the tests to pass in both modes. That requires generalizing the shadow width and remove any hard coded references that assume it's always 2 bytes. Reviewed By: stephan.yichao.zhao Differential Revision: https://reviews.llvm.org/D97884
2021-03-04 04:30:20 +08:00
; CHECK: [[LOCALLABEL:%.*]] = load i[[#SBITS]], i[[#SBITS]]* [[LOCALLABELALLOCA]]
; CHECK: [[LOCALCMP:%.*]] = icmp ne i[[#SBITS]] [[LOCALLABEL]], 0
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
; CHECK: br i1 [[LOCALCMP]]
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%load = load i32, i32* %i
DataFlowSanitizer: Add a debugging feature to help us track nonzero labels. Summary: When the -dfsan-debug-nonzero-labels parameter is supplied, the code is instrumented such that when a call parameter, return value or load produces a nonzero label, the function __dfsan_nonzero_label is called. The idea is that a debugger breakpoint can be set on this function in a nominally label-free program to help identify any bugs in the instrumentation pass causing labels to be introduced. Reviewers: eugenis CC: llvm-commits Differential Revision: http://llvm-reviews.chandlerc.com/D1405 llvm-svn: 188472
2013-08-16 02:51:12 +08:00
ret i32 %load
}