Skip to content

Commit 5f9ed2f

Browse files
vitalybukavitalybuka
authored
[clang][CodeGen] Guard ubsan checks with llvm.allow.ubsan.check (#87436)
Intrinsic inserted into CodeGenFunction::EmitCheck, which is not mostly used by CFI. CFI is not the goal, and fixing inconsistencies with CFI is outside of the cope of the patch. RFC: https://discourse.llvm.org/t/rfc-add-llvm-experimental-hot-intrinsic-or-llvm-hot/77641
1 parent e1830f5 commit 5f9ed2f

File tree

2 files changed

+82
-38
lines changed

2 files changed

+82
-38
lines changed

‎clang/lib/CodeGen/CGExpr.cpp

Lines changed: 18 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -56,7 +56,13 @@ using namespace CodeGen;
5656
// Experiment to make sanitizers easier to debug
5757
static llvm::cl::opt<bool> ClSanitizeDebugDeoptimization(
5858
"ubsan-unique-traps", llvm::cl::Optional,
59-
llvm::cl::desc("Deoptimize traps for UBSAN so there is 1 trap per check"));
59+
llvm::cl::desc("Deoptimize traps for UBSAN so there is 1 trap per check."));
60+
61+
// TODO: Introduce frontend options to enabled per sanitizers, similar to
62+
// `fsanitize-trap`.
63+
static llvm::cl::opt<bool> ClSanitizeGuardChecks(
64+
"ubsan-guard-checks", llvm::cl::Optional,
65+
llvm::cl::desc("Guard UBSAN checks with `llvm.allow.ubsan.check()`."));
6066

6167
//===--------------------------------------------------------------------===//
6268
// Miscellaneous Helper Methods
@@ -3522,6 +3528,17 @@ void CodeGenFunction::EmitCheck(
35223528
Cond = Cond ? Builder.CreateAnd(Cond, Check) : Check;
35233529
}
35243530

3531+
if (ClSanitizeGuardChecks) {
3532+
llvm::Value *Allow =
3533+
Builder.CreateCall(CGM.getIntrinsic(llvm::Intrinsic::allow_ubsan_check),
3534+
llvm::ConstantInt::get(CGM.Int8Ty, CheckHandler));
3535+
3536+
for (llvm::Value **Cond : {&FatalCond, &RecoverableCond, &TrapCond}) {
3537+
if (*Cond)
3538+
*Cond = Builder.CreateOr(*Cond, Builder.CreateNot(Allow));
3539+
}
3540+
}
3541+
35253542
if (TrapCond)
35263543
EmitTrapCheck(TrapCond, CheckHandler);
35273544
if (!FatalCond && !RecoverableCond)

‎clang/test/CodeGen/allow-ubsan-check.c

Lines changed: 64 additions & 37 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
11
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 4
2-
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null | FileCheck %s
3-
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null -fsanitize-trap=signed-integer-overflow,integer-divide-by-zero,null | FileCheck %s --check-prefixes=TRAP
4-
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null -fsanitize-recover=signed-integer-overflow,integer-divide-by-zero,null | FileCheck %s --check-prefixes=RECOVER
2+
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null -mllvm -ubsan-guard-checks | FileCheck %s
3+
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null -mllvm -ubsan-guard-checks -fsanitize-trap=signed-integer-overflow,integer-divide-by-zero,null | FileCheck %s --check-prefixes=TRAP
4+
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s -fsanitize=signed-integer-overflow,integer-divide-by-zero,null -mllvm -ubsan-guard-checks -fsanitize-recover=signed-integer-overflow,integer-divide-by-zero,null | FileCheck %s --check-prefixes=RECOVER
55

66

77
// CHECK-LABEL: define dso_local i32 @div(
@@ -18,11 +18,14 @@
1818
// CHECK-NEXT: [[TMP4:%.*]] = icmp ne i32 [[TMP1]], -1, !nosanitize [[META2]]
1919
// CHECK-NEXT: [[OR:%.*]] = or i1 [[TMP3]], [[TMP4]], !nosanitize [[META2]]
2020
// CHECK-NEXT: [[TMP5:%.*]] = and i1 [[TMP2]], [[OR]], !nosanitize [[META2]]
21-
// CHECK-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[HANDLER_DIVREM_OVERFLOW:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize [[META2]]
21+
// CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 3), !nosanitize [[META2]]
22+
// CHECK-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
23+
// CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
24+
// CHECK-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[HANDLER_DIVREM_OVERFLOW:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize [[META2]]
2225
// CHECK: handler.divrem_overflow:
23-
// CHECK-NEXT: [[TMP6:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
24-
// CHECK-NEXT: [[TMP7:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
25-
// CHECK-NEXT: call void @__ubsan_handle_divrem_overflow_abort(ptr @[[GLOB1:[0-9]+]], i64 [[TMP6]], i64 [[TMP7]]) #[[ATTR3:[0-9]+]], !nosanitize [[META2]]
26+
// CHECK-NEXT: [[TMP9:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
27+
// CHECK-NEXT: [[TMP10:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
28+
// CHECK-NEXT: call void @__ubsan_handle_divrem_overflow_abort(ptr @[[GLOB1:[0-9]+]], i64 [[TMP9]], i64 [[TMP10]]) #[[ATTR4:[0-9]+]], !nosanitize [[META2]]
2629
// CHECK-NEXT: unreachable, !nosanitize [[META2]]
2730
// CHECK: cont:
2831
// CHECK-NEXT: [[DIV:%.*]] = sdiv i32 [[TMP0]], [[TMP1]]
@@ -42,9 +45,12 @@
4245
// TRAP-NEXT: [[TMP4:%.*]] = icmp ne i32 [[TMP1]], -1, !nosanitize [[META2]]
4346
// TRAP-NEXT: [[OR:%.*]] = or i1 [[TMP3]], [[TMP4]], !nosanitize [[META2]]
4447
// TRAP-NEXT: [[TMP5:%.*]] = and i1 [[TMP2]], [[OR]], !nosanitize [[META2]]
45-
// TRAP-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
48+
// TRAP-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 3), !nosanitize [[META2]]
49+
// TRAP-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
50+
// TRAP-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
51+
// TRAP-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
4652
// TRAP: trap:
47-
// TRAP-NEXT: call void @llvm.ubsantrap(i8 3) #[[ATTR3:[0-9]+]], !nosanitize [[META2]]
53+
// TRAP-NEXT: call void @llvm.ubsantrap(i8 3) #[[ATTR4:[0-9]+]], !nosanitize [[META2]]
4854
// TRAP-NEXT: unreachable, !nosanitize [[META2]]
4955
// TRAP: cont:
5056
// TRAP-NEXT: [[DIV:%.*]] = sdiv i32 [[TMP0]], [[TMP1]]
@@ -64,11 +70,14 @@
6470
// RECOVER-NEXT: [[TMP4:%.*]] = icmp ne i32 [[TMP1]], -1, !nosanitize [[META2]]
6571
// RECOVER-NEXT: [[OR:%.*]] = or i1 [[TMP3]], [[TMP4]], !nosanitize [[META2]]
6672
// RECOVER-NEXT: [[TMP5:%.*]] = and i1 [[TMP2]], [[OR]], !nosanitize [[META2]]
67-
// RECOVER-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[HANDLER_DIVREM_OVERFLOW:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize [[META2]]
73+
// RECOVER-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 3), !nosanitize [[META2]]
74+
// RECOVER-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
75+
// RECOVER-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
76+
// RECOVER-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[HANDLER_DIVREM_OVERFLOW:%.*]], !prof [[PROF3:![0-9]+]], !nosanitize [[META2]]
6877
// RECOVER: handler.divrem_overflow:
69-
// RECOVER-NEXT: [[TMP6:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
70-
// RECOVER-NEXT: [[TMP7:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
71-
// RECOVER-NEXT: call void @__ubsan_handle_divrem_overflow(ptr @[[GLOB1:[0-9]+]], i64 [[TMP6]], i64 [[TMP7]]) #[[ATTR3:[0-9]+]], !nosanitize [[META2]]
78+
// RECOVER-NEXT: [[TMP9:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
79+
// RECOVER-NEXT: [[TMP10:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
80+
// RECOVER-NEXT: call void @__ubsan_handle_divrem_overflow(ptr @[[GLOB1:[0-9]+]], i64 [[TMP9]], i64 [[TMP10]]) #[[ATTR4:[0-9]+]], !nosanitize [[META2]]
7281
// RECOVER-NEXT: br label [[CONT]], !nosanitize [[META2]]
7382
// RECOVER: cont:
7483
// RECOVER-NEXT: [[DIV:%.*]] = sdiv i32 [[TMP0]], [[TMP1]]
@@ -85,14 +94,17 @@ int div(int x, int y) {
8594
// CHECK-NEXT: store ptr [[X]], ptr [[X_ADDR]], align 8
8695
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
8796
// CHECK-NEXT: [[TMP1:%.*]] = icmp ne ptr [[TMP0]], null, !nosanitize [[META2]]
88-
// CHECK-NEXT: br i1 [[TMP1]], label [[CONT:%.*]], label [[HANDLER_TYPE_MISMATCH:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
97+
// CHECK-NEXT: [[TMP2:%.*]] = call i1 @llvm.allow.ubsan.check(i8 22), !nosanitize [[META2]]
98+
// CHECK-NEXT: [[TMP3:%.*]] = xor i1 [[TMP2]], true, !nosanitize [[META2]]
99+
// CHECK-NEXT: [[TMP4:%.*]] = or i1 [[TMP1]], [[TMP3]], !nosanitize [[META2]]
100+
// CHECK-NEXT: br i1 [[TMP4]], label [[CONT:%.*]], label [[HANDLER_TYPE_MISMATCH:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
89101
// CHECK: handler.type_mismatch:
90-
// CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[TMP0]] to i64, !nosanitize [[META2]]
91-
// CHECK-NEXT: call void @__ubsan_handle_type_mismatch_v1_abort(ptr @[[GLOB2:[0-9]+]], i64 [[TMP2]]) #[[ATTR3]], !nosanitize [[META2]]
102+
// CHECK-NEXT: [[TMP5:%.*]] = ptrtoint ptr [[TMP0]] to i64, !nosanitize [[META2]]
103+
// CHECK-NEXT: call void @__ubsan_handle_type_mismatch_v1_abort(ptr @[[GLOB2:[0-9]+]], i64 [[TMP5]]) #[[ATTR4]], !nosanitize [[META2]]
92104
// CHECK-NEXT: unreachable, !nosanitize [[META2]]
93105
// CHECK: cont:
94-
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP0]], align 4
95-
// CHECK-NEXT: ret i32 [[TMP3]]
106+
// CHECK-NEXT: [[TMP6:%.*]] = load i32, ptr [[TMP0]], align 4
107+
// CHECK-NEXT: ret i32 [[TMP6]]
96108
//
97109
// TRAP-LABEL: define dso_local i32 @null(
98110
// TRAP-SAME: ptr noundef [[X:%.*]]) #[[ATTR0]] {
@@ -101,13 +113,16 @@ int div(int x, int y) {
101113
// TRAP-NEXT: store ptr [[X]], ptr [[X_ADDR]], align 8
102114
// TRAP-NEXT: [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
103115
// TRAP-NEXT: [[TMP1:%.*]] = icmp ne ptr [[TMP0]], null, !nosanitize [[META2]]
104-
// TRAP-NEXT: br i1 [[TMP1]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
116+
// TRAP-NEXT: [[TMP2:%.*]] = call i1 @llvm.allow.ubsan.check(i8 22), !nosanitize [[META2]]
117+
// TRAP-NEXT: [[TMP3:%.*]] = xor i1 [[TMP2]], true, !nosanitize [[META2]]
118+
// TRAP-NEXT: [[TMP4:%.*]] = or i1 [[TMP1]], [[TMP3]], !nosanitize [[META2]]
119+
// TRAP-NEXT: br i1 [[TMP4]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
105120
// TRAP: trap:
106-
// TRAP-NEXT: call void @llvm.ubsantrap(i8 22) #[[ATTR3]], !nosanitize [[META2]]
121+
// TRAP-NEXT: call void @llvm.ubsantrap(i8 22) #[[ATTR4]], !nosanitize [[META2]]
107122
// TRAP-NEXT: unreachable, !nosanitize [[META2]]
108123
// TRAP: cont:
109-
// TRAP-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP0]], align 4
110-
// TRAP-NEXT: ret i32 [[TMP2]]
124+
// TRAP-NEXT: [[TMP5:%.*]] = load i32, ptr [[TMP0]], align 4
125+
// TRAP-NEXT: ret i32 [[TMP5]]
111126
//
112127
// RECOVER-LABEL: define dso_local i32 @null(
113128
// RECOVER-SAME: ptr noundef [[X:%.*]]) #[[ATTR0]] {
@@ -116,14 +131,17 @@ int div(int x, int y) {
116131
// RECOVER-NEXT: store ptr [[X]], ptr [[X_ADDR]], align 8
117132
// RECOVER-NEXT: [[TMP0:%.*]] = load ptr, ptr [[X_ADDR]], align 8
118133
// RECOVER-NEXT: [[TMP1:%.*]] = icmp ne ptr [[TMP0]], null, !nosanitize [[META2]]
119-
// RECOVER-NEXT: br i1 [[TMP1]], label [[CONT:%.*]], label [[HANDLER_TYPE_MISMATCH:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
134+
// RECOVER-NEXT: [[TMP2:%.*]] = call i1 @llvm.allow.ubsan.check(i8 22), !nosanitize [[META2]]
135+
// RECOVER-NEXT: [[TMP3:%.*]] = xor i1 [[TMP2]], true, !nosanitize [[META2]]
136+
// RECOVER-NEXT: [[TMP4:%.*]] = or i1 [[TMP1]], [[TMP3]], !nosanitize [[META2]]
137+
// RECOVER-NEXT: br i1 [[TMP4]], label [[CONT:%.*]], label [[HANDLER_TYPE_MISMATCH:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
120138
// RECOVER: handler.type_mismatch:
121-
// RECOVER-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[TMP0]] to i64, !nosanitize [[META2]]
122-
// RECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1(ptr @[[GLOB2:[0-9]+]], i64 [[TMP2]]) #[[ATTR3]], !nosanitize [[META2]]
139+
// RECOVER-NEXT: [[TMP5:%.*]] = ptrtoint ptr [[TMP0]] to i64, !nosanitize [[META2]]
140+
// RECOVER-NEXT: call void @__ubsan_handle_type_mismatch_v1(ptr @[[GLOB2:[0-9]+]], i64 [[TMP5]]) #[[ATTR4]], !nosanitize [[META2]]
123141
// RECOVER-NEXT: br label [[CONT]], !nosanitize [[META2]]
124142
// RECOVER: cont:
125-
// RECOVER-NEXT: [[TMP3:%.*]] = load i32, ptr [[TMP0]], align 4
126-
// RECOVER-NEXT: ret i32 [[TMP3]]
143+
// RECOVER-NEXT: [[TMP6:%.*]] = load i32, ptr [[TMP0]], align 4
144+
// RECOVER-NEXT: ret i32 [[TMP6]]
127145
//
128146
int null(int* x) {
129147
return *x;
@@ -142,11 +160,14 @@ int null(int* x) {
142160
// CHECK-NEXT: [[TMP3:%.*]] = extractvalue { i32, i1 } [[TMP2]], 0, !nosanitize [[META2]]
143161
// CHECK-NEXT: [[TMP4:%.*]] = extractvalue { i32, i1 } [[TMP2]], 1, !nosanitize [[META2]]
144162
// CHECK-NEXT: [[TMP5:%.*]] = xor i1 [[TMP4]], true, !nosanitize [[META2]]
145-
// CHECK-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[HANDLER_ADD_OVERFLOW:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
163+
// CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 0), !nosanitize [[META2]]
164+
// CHECK-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
165+
// CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
166+
// CHECK-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[HANDLER_ADD_OVERFLOW:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
146167
// CHECK: handler.add_overflow:
147-
// CHECK-NEXT: [[TMP6:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
148-
// CHECK-NEXT: [[TMP7:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
149-
// CHECK-NEXT: call void @__ubsan_handle_add_overflow_abort(ptr @[[GLOB3:[0-9]+]], i64 [[TMP6]], i64 [[TMP7]]) #[[ATTR3]], !nosanitize [[META2]]
168+
// CHECK-NEXT: [[TMP9:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
169+
// CHECK-NEXT: [[TMP10:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
170+
// CHECK-NEXT: call void @__ubsan_handle_add_overflow_abort(ptr @[[GLOB3:[0-9]+]], i64 [[TMP9]], i64 [[TMP10]]) #[[ATTR4]], !nosanitize [[META2]]
150171
// CHECK-NEXT: unreachable, !nosanitize [[META2]]
151172
// CHECK: cont:
152173
// CHECK-NEXT: ret i32 [[TMP3]]
@@ -164,9 +185,12 @@ int null(int* x) {
164185
// TRAP-NEXT: [[TMP3:%.*]] = extractvalue { i32, i1 } [[TMP2]], 0, !nosanitize [[META2]]
165186
// TRAP-NEXT: [[TMP4:%.*]] = extractvalue { i32, i1 } [[TMP2]], 1, !nosanitize [[META2]]
166187
// TRAP-NEXT: [[TMP5:%.*]] = xor i1 [[TMP4]], true, !nosanitize [[META2]]
167-
// TRAP-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
188+
// TRAP-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 0), !nosanitize [[META2]]
189+
// TRAP-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
190+
// TRAP-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
191+
// TRAP-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[TRAP:%.*]], !nosanitize [[META2]]
168192
// TRAP: trap:
169-
// TRAP-NEXT: call void @llvm.ubsantrap(i8 0) #[[ATTR3]], !nosanitize [[META2]]
193+
// TRAP-NEXT: call void @llvm.ubsantrap(i8 0) #[[ATTR4]], !nosanitize [[META2]]
170194
// TRAP-NEXT: unreachable, !nosanitize [[META2]]
171195
// TRAP: cont:
172196
// TRAP-NEXT: ret i32 [[TMP3]]
@@ -184,11 +208,14 @@ int null(int* x) {
184208
// RECOVER-NEXT: [[TMP3:%.*]] = extractvalue { i32, i1 } [[TMP2]], 0, !nosanitize [[META2]]
185209
// RECOVER-NEXT: [[TMP4:%.*]] = extractvalue { i32, i1 } [[TMP2]], 1, !nosanitize [[META2]]
186210
// RECOVER-NEXT: [[TMP5:%.*]] = xor i1 [[TMP4]], true, !nosanitize [[META2]]
187-
// RECOVER-NEXT: br i1 [[TMP5]], label [[CONT:%.*]], label [[HANDLER_ADD_OVERFLOW:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
211+
// RECOVER-NEXT: [[TMP6:%.*]] = call i1 @llvm.allow.ubsan.check(i8 0), !nosanitize [[META2]]
212+
// RECOVER-NEXT: [[TMP7:%.*]] = xor i1 [[TMP6]], true, !nosanitize [[META2]]
213+
// RECOVER-NEXT: [[TMP8:%.*]] = or i1 [[TMP5]], [[TMP7]], !nosanitize [[META2]]
214+
// RECOVER-NEXT: br i1 [[TMP8]], label [[CONT:%.*]], label [[HANDLER_ADD_OVERFLOW:%.*]], !prof [[PROF3]], !nosanitize [[META2]]
188215
// RECOVER: handler.add_overflow:
189-
// RECOVER-NEXT: [[TMP6:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
190-
// RECOVER-NEXT: [[TMP7:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
191-
// RECOVER-NEXT: call void @__ubsan_handle_add_overflow(ptr @[[GLOB3:[0-9]+]], i64 [[TMP6]], i64 [[TMP7]]) #[[ATTR3]], !nosanitize [[META2]]
216+
// RECOVER-NEXT: [[TMP9:%.*]] = zext i32 [[TMP0]] to i64, !nosanitize [[META2]]
217+
// RECOVER-NEXT: [[TMP10:%.*]] = zext i32 [[TMP1]] to i64, !nosanitize [[META2]]
218+
// RECOVER-NEXT: call void @__ubsan_handle_add_overflow(ptr @[[GLOB3:[0-9]+]], i64 [[TMP9]], i64 [[TMP10]]) #[[ATTR4]], !nosanitize [[META2]]
192219
// RECOVER-NEXT: br label [[CONT]], !nosanitize [[META2]]
193220
// RECOVER: cont:
194221
// RECOVER-NEXT: ret i32 [[TMP3]]

0 commit comments

Comments
 (0)