6678f8e505
Information in the function `Prologue Data` is intentionally opaque. When a function with `Prologue Data` is duplicated. The self (global value) references inside `Prologue Data` is still pointing to the original function. This may cause errors like `fatal error: error in backend: Cannot represent a difference across sections`. This patch detaches the information from function `Prologue Data` and attaches it to a function metadata node. This and D116130 fix https://github.com/llvm/llvm-project/issues/49689. Reviewed By: pcc Differential Revision: https://reviews.llvm.org/D115844
18 lines
789 B
C++
18 lines
789 B
C++
// RUN: %clang_cc1 -no-opaque-pointers -std=c++17 -fsanitize=function -emit-llvm -triple x86_64-linux-gnu %s -o - | FileCheck %s
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// Check that typeinfo recorded in function prolog doesn't have "Do" noexcept
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// qualifier in its mangled name.
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// CHECK: [[PROXY:@.*]] = private unnamed_addr constant i8* bitcast ({ i8*, i8* }* @_ZTIFvvE to i8*)
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// CHECK: define{{.*}} void @_Z1fv() #{{.*}} !func_sanitize ![[FUNCSAN:.*]] {
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void f() noexcept {}
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// CHECK: define{{.*}} void @_Z1gPDoFvvE
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void g(void (*p)() noexcept) {
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// Check that reference typeinfo at call site doesn't have "Do" noexcept
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// qualifier in its mangled name, either.
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// CHECK: icmp eq i8* %{{.*}}, bitcast ({ i8*, i8* }* @_ZTIFvvE to i8*), !nosanitize
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p();
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}
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// CHECK: ![[FUNCSAN]] = !{i32 846595819, i8** [[PROXY]]}
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