6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
69 lines
1.2 KiB
C
69 lines
1.2 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.7.0 -emit-llvm -o - %s | FileCheck %s
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// PR4610
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#pragma pack(4)
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struct ref {
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struct ref *next;
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} refs;
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// PR13580
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struct S
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{
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char a[3];
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#pragma pack(1)
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struct T
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{
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char b;
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int c;
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} d;
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#pragma pack()
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struct T2
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{
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char b;
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int c;
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} d2;
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} ss;
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struct S3
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{
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char a[3];
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#pragma pack(push, 2)
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struct T3
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{
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char b;
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int c;
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} d;
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#pragma pack(pop)
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struct T32
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{
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char b;
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int c;
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} e;
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} s3;
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struct S4
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{
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char a[3];
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#pragma align=packed
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struct T4
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{
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char b;
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int c;
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} d;
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int e;
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} s4;
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// CHECK: [[struct_ref:%[a-zA-Z0-9_.]+]] = type { [[struct_ref]]* }
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// CHECK: [[struct_S:%[a-zA-Z0-9_.]+]] = type { [3 x i8], [[struct_T:%[a-zA-Z0-9_.]+]], [[struct_T2:%[a-zA-Z0-9_.]+]] }
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// CHECK: [[struct_T]] = type <{ i8, i32 }>
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// CHECK: [[struct_T2]] = type { i8, i32 }
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// CHECK: %struct.S3 = type { [3 x i8], i8, %struct.T3, %struct.T32 }
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// CHECK: %struct.T3 = type <{ i8, i8, i32 }>
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// CHECK: %struct.T32 = type { i8, i32 }
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// CHECK: %struct.S4 = type { [3 x i8], %struct.T4, i32 }
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// CHECK: %struct.T4 = type <{ i8, i32 }>
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// CHECK: @refs ={{.*}} global [[struct_ref]]
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// CHECK: @ss ={{.*}} global [[struct_S]]
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