1b1c8d83d3
Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
// RUN: %clang_cc1 -triple x86_64-windows -fasync-exceptions -fcxx-exceptions -fexceptions -fms-extensions -x c++ -Wno-implicit-function-declaration -S -emit-llvm %s -o - | FileCheck %s
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// CHECK: define dso_local void @"?crash@@YAXH@Z
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// CHECK: invoke void @llvm.seh.try.begin()
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// CHECK: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.end()
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// CHECK: %[[dst:[0-9-]+]] = catchswitch within none [label %catch] unwind to caller
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// CHECK: %[[dst1:[0-9-]+]] = catchpad within %[[dst]] [i8* null, i32 0, i8* null]
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// CHECK: "funclet"(token %[[dst1]])
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// CHECK: invoke void @llvm.seh.try.begin()
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// CHECK: %[[src:[0-9-]+]] = load volatile i32, i32* %i
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// CHECK-NEXT: invoke void @"?crash@@YAXH@Z"(i32 noundef %[[src]])
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// CHECK: invoke void @llvm.seh.try.end()
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// *****************************************************************************
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// Abstract: Test CPP catch(...) under SEH -EHa option
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void printf(...);
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int volatile *NullPtr = 0;
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void foo() {
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*NullPtr = 0;
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}
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int *pt1, *pt2, *pt3;
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int g;
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void crash(int i) {
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g = i;
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try {
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struct A {
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A() {
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printf(" in A ctor \n");
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if (g == 0)
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*NullPtr = 0;
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}
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~A() {
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printf(" in A dtor \n");
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}
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} ObjA;
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if (i == 1)
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*NullPtr = 0;
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} catch (...) {
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printf(" in catch(...) funclet \n");
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if (i == 1)
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throw(i);
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}
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}
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int main() {
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for (int i = 0; i < 2; i++) {
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__try {
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crash(i);
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} __except (1) {
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printf(" Test CPP unwind: in except handler i = %d \n", i);
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}
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}
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return 0;
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}
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