[X86] Create mergeable constant pool entries for AVX

We supported creating mergeable constant pool entries for smaller
constants but not for 32-byte AVX constants.

llvm-svn: 261584

2 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/TargetLoweringObjectFile.cpp b/llvm/lib/Target/TargetLoweringObjectFile.cpp
index 3c04a214fad..4169237aa30 100644
--- a/llvm/lib/Target/TargetLoweringObjectFile.cpp
+++ b/llvm/lib/Target/TargetLoweringObjectFile.cpp
@@ -202,6 +202,7 @@ SectionKind TargetLoweringObjectFile::getKindForGlobal(const GlobalValue *GV,
       case 4:  return SectionKind::getMergeableConst4();
       case 8:  return SectionKind::getMergeableConst8();
       case 16: return SectionKind::getMergeableConst16();
+      case 32: return SectionKind::getMergeableConst32();
       default:
         return SectionKind::getReadOnly();
       }
diff --git a/llvm/lib/Target/X86/X86TargetObjectFile.cpp b/llvm/lib/Target/X86/X86TargetObjectFile.cpp
index 0d37fcd1b43..e72f3a7a2e8 100644
--- a/llvm/lib/Target/X86/X86TargetObjectFile.cpp
+++ b/llvm/lib/Target/X86/X86TargetObjectFile.cpp
@@ -176,6 +176,11 @@ MCSection *X86WindowsTargetObjectFile::getSectionForConstant(
         COMDATSymName = "__xmm@" + scalarConstantToHexString(C);
         Align = 16;
       }
+    } else if (Kind.isMergeableConst32()) {
+      if (Align <= 32) {
+        COMDATSymName = "__ymm@" + scalarConstantToHexString(C);
+        Align = 32;
+      }
     }
 
     if (!COMDATSymName.empty())