From 0ae07098f7d2ad5a1868d448d0b1b4eef2a3b091 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Wed, 27 Nov 2013 06:44:18 +0000
Subject: Merging r195148:
 ------------------------------------------------------------------------
 r195148 | rafael | 2013-11-19 11:52:52 -0800 (Tue, 19 Nov 2013) | 15 lines

Support multiple COFF sections with the same name but different COMDAT.

This is the first step to fix pr17918.

It extends the .section directive a bit, inspired by what the ELF one looks
like. The problem with using linkonce is that given

.section foo
.linkonce....

.section foo
.linkonce

we would already have switched sections when getting to .linkonce. The cleanest
solution seems to be to add the comdat information in the .section itself.
------------------------------------------------------------------------


git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195822 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/MC/COFF/section-comdat.s | 188 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 188 insertions(+)
 create mode 100644 test/MC/COFF/section-comdat.s

(limited to 'test/MC')

diff --git a/test/MC/COFF/section-comdat.s b/test/MC/COFF/section-comdat.s
new file mode 100644
index 0000000000..dd5be871b0
--- /dev/null
+++ b/test/MC/COFF/section-comdat.s
@@ -0,0 +1,188 @@
+// RUN: llvm-mc -triple i386-pc-win32 -filetype=obj %s | llvm-readobj -s -t | FileCheck %s
+// RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-readobj -s -t | FileCheck %s
+
+.section assocSec
+.linkonce
+.long 1
+
+.section secName, "dr", discard, "Symbol1"
+.globl Symbol1
+Symbol1:
+.long 1
+
+.section secName, "dr", one_only, "Symbol2"
+.globl Symbol2
+Symbol2:
+.long 1
+
+.section SecName, "dr", same_size, "Symbol3"
+.globl Symbol3
+Symbol3:
+.long 1
+
+.section SecName, "dr", same_contents, "Symbol4"
+.globl Symbol4
+Symbol4:
+.long 1
+
+.section SecName, "dr", associative assocSec, "Symbol5"
+.globl Symbol5
+Symbol5:
+.long 1
+
+.section SecName, "dr", largest, "Symbol6"
+.globl Symbol6
+Symbol6:
+.long 1
+
+.section SecName, "dr", newest, "Symbol7"
+.globl Symbol7
+Symbol7:
+.long 1
+
+// CHECK: Sections [
+// CHECK:   Section {
+// CHECK:     Number: 1
+// CHECK:     Name: assocSec
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 2
+// CHECK:     Name: secName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 3
+// CHECK:     Name: secName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 4
+// CHECK:     Name: SecName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 5
+// CHECK:     Name: SecName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 6
+// CHECK:     Name: SecName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 7
+// CHECK:     Name: SecName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK:   Section {
+// CHECK:     Number: 8
+// CHECK:     Name: SecName
+// CHECK:     Characteristics [
+// CHECK:       IMAGE_SCN_LNK_COMDAT
+// CHECK:     ]
+// CHECK:   }
+// CHECK: ]
+// CHECK: Symbols [
+// CHECK:   Symbol {
+// CHECK:     Name: assocSec
+// CHECK:     Section: assocSec (1)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: Any
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: secName
+// CHECK:     Section: secName (2)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: Any
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: secName
+// CHECK:     Section: secName (3)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: NoDuplicates
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: SecName
+// CHECK:     Section: SecName (4)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: SameSize
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: SecName
+// CHECK:     Section: SecName (5)
+// CHECK:     AuxSymbolCount: 1
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: ExactMatch
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: SecName
+// CHECK:     Section: SecName (6)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: Associative
+// CHECK:       AssocSection: assocSec (1)
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: SecName
+// CHECK:     Section: SecName (7)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: Largest
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: SecName
+// CHECK:     Section: SecName (8)
+// CHECK:     AuxSectionDef {
+// CHECK:       Selection: Newest (0x7)
+// CHECK:     }
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol1
+// CHECK:     Section: secName (2)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol2
+// CHECK:     Section: secName (3)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol3
+// CHECK:     Section: SecName (4)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol4
+// CHECK:     Section: SecName (5)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol5
+// CHECK:     Section: SecName (6)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol6
+// CHECK:     Section: SecName (7)
+// CHECK:   }
+// CHECK:   Symbol {
+// CHECK:     Name: Symbol7
+// CHECK:     Section: SecName (8)
+// CHECK:   }
+// CHECK: ]
-- 
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