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ELFObjectWriter: deduplicate suffices in strtab

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We already do this for shstrtab, so might as well do it for strtab. This
extracts the string table building code into a separate class. The idea
is to use it for other object formats too.

I mostly wanted to do this for the general principle, but it does save a
little bit on object file size. I tried this on a clang bootstrap and
saved 0.54% on the sum of object file sizes (1.14 MB out of 212 MB for
a release build).

Differential Revision: http://reviews.llvm.org/D3533

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207670 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg
2014-04-30 16:25:02 +00:00
parent b1c1b8a78d
commit a8febf2283
22 changed files with 282 additions and 165 deletions
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4
test/MC/ELF/pr9292.s
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@@ -8,7 +8,7 @@ mov %eax,bar
// CHECK: Symbol {
// CHECK: Name: bar (5)
// CHECK: Name: bar
// CHECK-NEXT: Value: 0x0
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
@@ -17,7 +17,7 @@ mov %eax,bar
// CHECK-NEXT: Section: Undefined (0x0)
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: foo (1)
// CHECK-NEXT: Name: foo
// CHECK-NEXT: Value: 0x0
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global