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 `{{.*}} `.
31 lines
982 B
C
31 lines
982 B
C
// Ensure calling bypassing the driver with -fembed-bitcode embeds bitcode pre-
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// optimizations
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// REQUIRES: x86-registered-target
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// RUN: %clang_cc1 %s -O2 -emit-obj -triple=x86_64-unknown-linux-gnu -o %t.o -fembed-bitcode=all
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// RUN: llvm-objcopy --dump-section=.llvmbc=%t.bc %t.o /dev/null
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// Also check that the .llvmcmd section captures the optimization options.
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// RUN: llvm-dis %t.bc -o - | FileCheck %s --check-prefix=CHECK-BC
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// RUN: llvm-objcopy --dump-section=.llvmcmd=- %t.o /dev/null | FileCheck %s --check-prefix=CHECK-CMD
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// CHECK-BC-LABEL: define{{.*}} void @bar() #0 {
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// CHECK-BC-NEXT: entry:
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// CHECK-BC-NEXT: ret void
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// CHECK-BC-NEXT: }
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// CHECK-BC-LABEL: define{{.*}} void @foo() #1 {
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// CHECK-BC-NEXT: entry:
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// CHECK-BC-NEXT: call void @bar()
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// CHECK-BC-NEXT: ret void
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// CHECK-BC-NEXT: }
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// CHECK-BC-LABEL: attributes #0 = {{.*}} alwaysinline
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// CHECK-CMD: -O2
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__attribute__((always_inline)) void bar() {
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return;
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}
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void foo() {
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bar();
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return;
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}
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