[PATCH] D48567: [COFF] Fix constant sharing regression for MinGW
Martin Storsjö via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Jun 28 13:33:18 PDT 2018
This revision was not accepted when it landed; it landed in state "Needs Review".
This revision was automatically updated to reflect the committed changes.
Closed by commit rL335918: [COFF] Fix constant sharing regression for MinGW (authored by mstorsjo, committed by ).
Changed prior to commit:
https://reviews.llvm.org/D48567?vs=152850&id=153384#toc
Repository:
rL LLVM
https://reviews.llvm.org/D48567
Files:
llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
llvm/trunk/test/CodeGen/X86/win_cst_pool.ll
Index: llvm/trunk/test/CodeGen/X86/win_cst_pool.ll
===================================================================
--- llvm/trunk/test/CodeGen/X86/win_cst_pool.ll
+++ llvm/trunk/test/CodeGen/X86/win_cst_pool.ll
@@ -1,4 +1,5 @@
; RUN: llc < %s -mtriple=x86_64-win32 -mattr=sse2 -mattr=avx | FileCheck %s
+; RUN: llc < %s -mtriple=x86_64-win32-gnu -mattr=sse2 -mattr=avx | FileCheck -check-prefix=MINGW %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-pc-windows-msvc"
@@ -14,6 +15,14 @@
; CHECK: movsd __real at 0000000000800000(%rip), %xmm0
; CHECK-NEXT: ret
+; MINGW: .section .rdata,"dr"
+; MINGW-NEXT: .p2align 3
+; MINGW-NEXT: [[LABEL:\.LC.*]]:
+; MINGW-NEXT: .quad 8388608
+; MINGW: double:
+; MINGW: movsd [[LABEL]](%rip), %xmm0
+; MINGW-NEXT: ret
+
define <4 x i32> @vec1() {
ret <4 x i32> <i32 3, i32 2, i32 1, i32 0>
}
Index: llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ llvm/trunk/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -1350,7 +1350,10 @@
MCSection *TargetLoweringObjectFileCOFF::getSectionForConstant(
const DataLayout &DL, SectionKind Kind, const Constant *C,
unsigned &Align) const {
- if (Kind.isMergeableConst() && C) {
+ if (Kind.isMergeableConst() && C &&
+ getContext().getAsmInfo()->hasCOFFAssociativeComdats()) {
+ // GNU binutils doesn't support the kind of symbol with a null
+ // storage class that this generates.
const unsigned Characteristics = COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
COFF::IMAGE_SCN_MEM_READ |
COFF::IMAGE_SCN_LNK_COMDAT;
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