c97a70c6f5
String merging is one of the most time-consuming functions in lld. This patch parallelize it to speed it up. On my 2-socket 20-core 40-threads Xeon E5-2680 @ 2.8 GHz machine, this patch shorten the clang debug build link time from 7.11s to 5.16s. It's a 27% improvement and actually pretty noticeable. In this test condition, lld is now 4x faster than gold. Differential Revision: https://reviews.llvm.org/D38266 llvm-svn: 314588
74 lines
1.7 KiB
ArmAsm
74 lines
1.7 KiB
ArmAsm
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
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// RUN: ld.lld %t.o -o %t --gc-sections
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// RUN: llvm-readobj -symbols %t | FileCheck %s
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// CHECK: Symbols [
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// CHECK-NEXT: Symbol {
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// CHECK-NEXT: Name: (0)
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// CHECK-NEXT: Value: 0x0
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// CHECK-NEXT: Size: 0
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// CHECK-NEXT: Binding: Local (0x0)
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// CHECK-NEXT: Type: None (0x0)
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// CHECK-NEXT: Other: 0
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// CHECK-NEXT: Section: Undefined (0x0)
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// CHECK-NEXT: }
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// CHECK-NEXT: Symbol {
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// CHECK-NEXT: Name: s3
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// CHECK-NEXT: Value: 0x200120
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// CHECK-NEXT: Size: 0
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// CHECK-NEXT: Binding: Local (0x0)
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// CHECK-NEXT: Type: Object (0x1)
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// CHECK-NEXT: Other: 0
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// CHECK-NEXT: Section: .rodata (0x1)
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// CHECK-NEXT: }
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// CHECK-NEXT: Symbol {
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// CHECK-NEXT: Name: s1
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// CHECK-NEXT: Value: 0x200125
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// CHECK-NEXT: Size: 0
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// CHECK-NEXT: Binding: Local (0x0)
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// CHECK-NEXT: Type: Object (0x1)
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// CHECK-NEXT: Other [ (0x2)
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// CHECK-NEXT: STV_HIDDEN (0x2)
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// CHECK-NEXT: ]
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// CHECK-NEXT: Section: .rodata (0x1)
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// CHECK-NEXT: }
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// CHECK-NEXT: Symbol {
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// CHECK-NEXT: Name: _start
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// CHECK-NEXT: Value: 0x201000
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// CHECK-NEXT: Size: 0
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// CHECK-NEXT: Binding: Global (0x1)
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// CHECK-NEXT: Type: Function (0x2)
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// CHECK-NEXT: Other: 0
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// CHECK-NEXT: Section: .text (0x2)
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// CHECK-NEXT: }
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// CHECK-NEXT: ]
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.text
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.globl _start
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.type _start,@function
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_start:
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movl $s1, %eax
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movl $s3, %eax
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.hidden s1
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.type s1,@object
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.section .rodata.str1.1,"aMS",@progbits,1
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.globl s1
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s1:
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.asciz "abcd"
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.hidden s2
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.type s2,@object
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.globl s2
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s2:
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.asciz "efgh"
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.type s3,@object
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s3:
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.asciz "ijkl"
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.type s4,@object
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.globl s4
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s4:
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.asciz "mnop"
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