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 `{{.*}} `.
29 lines
840 B
C
29 lines
840 B
C
// RUN: %clang_cc1 -mrtd -triple i386-unknown-unknown -std=c89 -emit-llvm -o - %s 2>&1 | FileCheck %s
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// CHECK: mrtd.c:10:3: warning: function with no prototype cannot use the stdcall calling convention
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void baz(int arg);
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// CHECK: define{{.*}} x86_stdcallcc void @foo(i32 %arg) [[NUW:#[0-9]+]]
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void foo(int arg) {
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// CHECK: call x86_stdcallcc i32 bitcast (i32 (...)* @bar to i32 (i32)*)(
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bar(arg);
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// CHECK: call x86_stdcallcc void @baz(i32
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baz(arg);
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}
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// CHECK: declare x86_stdcallcc i32 @bar(...)
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// CHECK: declare x86_stdcallcc void @baz(i32)
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void qux(int arg, ...) { }
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// CHECK: define{{.*}} void @qux(i32 %arg, ...)
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void quux(int a1, int a2, int a3) {
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qux(a1, a2, a3);
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}
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// CHECK-LABEL: define{{.*}} x86_stdcallcc void @quux
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// CHECK: call void (i32, ...) @qux
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// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
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