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
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
// RUN: %clang_cc1 -triple i686-pc-win32 -fms-compatibility %s -emit-llvm -o - | FileCheck %s
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#include <stddef.h>
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struct arbitrary_t {} arbitrary;
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void *operator new(size_t size, arbitrary_t);
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struct arbitrary2_t {} arbitrary2;
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void *operator new[](size_t size, arbitrary2_t);
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namespace PR13164 {
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void f() {
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// MSVC will fall back on the non-array operator new.
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void *a;
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int *p = new(arbitrary) int[4];
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// CHECK: call noundef i8* @"??2@YAPAXIUarbitrary_t@@@Z"(i32 noundef 16, %struct.arbitrary_t*
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}
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struct S {
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void *operator new[](size_t size, arbitrary_t);
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};
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void g() {
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S *s = new(arbitrary) S[2];
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// CHECK: call noundef i8* @"??_US@PR13164@@SAPAXIUarbitrary_t@@@Z"(i32 noundef 2, %struct.arbitrary_t*
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S *s1 = new(arbitrary) S;
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// CHECK: call noundef i8* @"??2@YAPAXIUarbitrary_t@@@Z"(i32 noundef 1, %struct.arbitrary_t*
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}
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struct T {
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void *operator new(size_t size, arbitrary2_t);
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};
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void h() {
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// This should still call the global operator new[].
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T *t = new(arbitrary2) T[2];
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// CHECK: call noundef i8* @"??_U@YAPAXIUarbitrary2_t@@@Z"(i32 noundef 2, %struct.arbitrary2_t*
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}
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}
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