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 `{{.*}} `.
33 lines
990 B
C
33 lines
990 B
C
// RUN: %clang_cc1 -triple le32-unknown-nacl -emit-llvm -o - %s | FileCheck %s
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#include <stdarg.h>
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int get_int(va_list *args) {
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return va_arg(*args, int);
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}
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// CHECK: define{{.*}} i32 @get_int
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// CHECK: [[RESULT:%[a-z_0-9]+]] = va_arg {{.*}}, i32{{$}}
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// CHECK: store i32 [[RESULT]], i32* [[LOC:%[a-z_0-9]+]]
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// CHECK: [[RESULT2:%[a-z_0-9]+]] = load i32, i32* [[LOC]]
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// CHECK: ret i32 [[RESULT2]]
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struct Foo {
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int x;
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};
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struct Foo dest;
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void get_struct(va_list *args) {
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dest = va_arg(*args, struct Foo);
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}
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// CHECK: define{{.*}} void @get_struct
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// CHECK: [[RESULT:%[a-z_0-9]+]] = va_arg {{.*}}, %struct.Foo{{$}}
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// CHECK: store %struct.Foo [[RESULT]], %struct.Foo* [[LOC:%[a-z_0-9]+]]
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// CHECK: [[LOC2:%[a-z_0-9]+]] = bitcast {{.*}} [[LOC]] to i8*
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// CHECK: call void @llvm.memcpy{{.*}}@dest{{.*}}, i8* align {{[0-9]+}} [[LOC2]]
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void skip_struct(va_list *args) {
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va_arg(*args, struct Foo);
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}
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// CHECK: define{{.*}} void @skip_struct
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// CHECK: va_arg {{.*}}, %struct.Foo{{$}}
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