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
61 lines
1.4 KiB
C++
61 lines
1.4 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: invoke void @llvm.seh.scope.begin()
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// CHECK: invoke void @llvm.seh.scope.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: invoke void @llvm.seh.scope.end()
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// CHECK: invoke void @llvm.seh.scope.end()
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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 unwind Dtoring under SEH -EHa option
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void printf(...);
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int volatile *NullPtr = 0;
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void crash(int i) {
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struct A {
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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 == 0)
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*NullPtr = 0;
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struct B {
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~B() {
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printf(" in B dtor \n");
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}
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} ObjB;
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if (i == 1)
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*NullPtr = 0;
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struct C {
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~C() {
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printf(" in C dtor \n");
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}
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} ObjC;
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if (i == 2)
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*NullPtr = 0;
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}
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#define TRY __try
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#define CATCH_ALL __except (1)
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int g;
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int main() {
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for (int i = 0; i < 3; i++) {
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TRY {
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crash(i);
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}
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CATCH_ALL {
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printf(" Test CPP unwind: in catch 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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