For Darwin, put constant data into .const, .const_data, .literal{4|8|16}

sections.

llvm-svn: 35017

1 files changed, 23 insertions, 2 deletions

diff --git a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
index 4654ef4d3e1..fc65144f57e 100644
--- a/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/llvm/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -743,7 +743,8 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
 
     std::string name = Mang->getValueName(I);
     Constant *C = I->getInitializer();
-    unsigned Size = TD->getTypeSize(C->getType());
+    const Type *Type = C->getType();
+    unsigned Size = TD->getTypeSize(Type);
     unsigned Align = TD->getPreferredAlignmentLog(I);
 
     if (I->hasHiddenVisibility())
@@ -829,8 +830,28 @@ bool ARMAsmPrinter::doFinalization(Module &M) {
       } else {
         if (C->isNullValue() && !NoZerosInBSS && TAI->getBSSSection())
           SwitchToDataSection(TAI->getBSSSection(), I);
-        else
+        else if (!I->isConstant())
           SwitchToDataSection(TAI->getDataSection(), I);
+        else {
+          // Read-only data.
+          bool isIntFPLiteral = Type->isInteger()  || Type->isFloatingPoint();
+          if (C->ContainsRelocations() && Subtarget->isTargetDarwin() &&
+              TM.getRelocationModel() != Reloc::Static)
+            SwitchToDataSection("\t.const_data\n");
+          else if (isIntFPLiteral && Size == 4 &&
+                   TAI->getFourByteConstantSection())
+            SwitchToDataSection(TAI->getFourByteConstantSection(), I);
+          else if (isIntFPLiteral && Size == 8 &&
+                   TAI->getEightByteConstantSection())
+            SwitchToDataSection(TAI->getEightByteConstantSection(), I);
+          else if (isIntFPLiteral && Size == 16 &&
+                   TAI->getSixteenByteConstantSection())
+            SwitchToDataSection(TAI->getSixteenByteConstantSection(), I);
+          else if (TAI->getReadOnlySection())
+            SwitchToDataSection(TAI->getReadOnlySection(), I);
+          else
+            SwitchToDataSection(TAI->getDataSection(), I);
+        }
       }
 
       break;