Smaller function alignment when optimizing for size.

llvm-svn: 48805

3 files changed, 8 insertions, 6 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
index 07113131392..2537d67ddaa 100644
--- a/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ b/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -819,7 +819,7 @@ bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
     if (const char *Directive = TAI->getHiddenDirective())
       O << Directive << CurrentFnName << "\n";
   
-  EmitAlignment(4, F);
+  EmitAlignment(OptimizeForSize ? 2 : 4, F);
   O << CurrentFnName << ":\n";
 
   // Emit pre-function debug information.
diff --git a/llvm/lib/Target/X86/X86ATTAsmPrinter.cpp b/llvm/lib/Target/X86/X86ATTAsmPrinter.cpp
index 37afb46078f..06796566612 100644
--- a/llvm/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/llvm/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -98,21 +98,22 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
   SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
     
+  unsigned FnAlign = OptimizeForSize ? 1 : 4;
   switch (F->getLinkage()) {
   default: assert(0 && "Unknown linkage type!");
   case Function::InternalLinkage:  // Symbols default to internal.
-    EmitAlignment(4, F);
+    EmitAlignment(FnAlign, F);
     break;
   case Function::DLLExportLinkage:
     DLLExportedFns.insert(Mang->makeNameProper(F->getName(), ""));
     //FALLS THROUGH
   case Function::ExternalLinkage:
-    EmitAlignment(4, F);
+    EmitAlignment(FnAlign, F);
     O << "\t.globl\t" << CurrentFnName << "\n";    
     break;
   case Function::LinkOnceLinkage:
   case Function::WeakLinkage:
-    EmitAlignment(4, F);
+    EmitAlignment(FnAlign, F);
     if (Subtarget->isTargetDarwin()) {
       O << "\t.globl\t" << CurrentFnName << "\n";
       O << TAI->getWeakDefDirective() << CurrentFnName << "\n";
diff --git a/llvm/lib/Target/X86/X86IntelAsmPrinter.cpp b/llvm/lib/Target/X86/X86IntelAsmPrinter.cpp
index 0caab87dd03..ddd90cd40a8 100644
--- a/llvm/lib/Target/X86/X86IntelAsmPrinter.cpp
+++ b/llvm/lib/Target/X86/X86IntelAsmPrinter.cpp
@@ -57,17 +57,18 @@ bool X86IntelAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
 
   SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
 
+  unsigned FnAlign = OptimizeForSize ? 1 : 4;
   switch (F->getLinkage()) {
   default: assert(0 && "Unsupported linkage type!");
   case Function::InternalLinkage:
-    EmitAlignment(4);
+    EmitAlignment(FnAlign);
     break;    
   case Function::DLLExportLinkage:
     DLLExportedFns.insert(CurrentFnName);
     //FALLS THROUGH
   case Function::ExternalLinkage:
     O << "\tpublic " << CurrentFnName << "\n";
-    EmitAlignment(4);
+    EmitAlignment(FnAlign);
     break;    
   }