fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
16 lines
814 B
C++
16 lines
814 B
C++
// RUN: %clang_cc1 -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: @[[RTTI:[0-9]+]] = private constant i8* bitcast ({ i8*, i8* }* @_ZTIFvvE to i8*)
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// CHECK: define{{.*}} void @_Z1fv() #{{.*}} prologue <{ i32, i32 }> <{ i32 {{.*}}, i32 trunc (i64 sub (i64 ptrtoint (i8** @[[RTTI]] to i64), i64 ptrtoint (void ()* @_Z1fv to i64)) to i32) }>
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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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