Changes in directory llvm/lib/Target/PowerPC:
PPCAsmPrinter.cpp updated: 1.210 -> 1.211
---
Log message:
Prime text sections to improve branch locality in large object files.
---
Diffs of the changes: (+13 -0)
PPCAsmPrinter.cpp | 13 +++++++++++++
1 files changed, 13 insertions(+)
Index: llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
diff -u llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp:1.210
llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp:1.211
--- llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp:1.210 Fri Nov 17 19:23:56 2006
+++ llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp Tue Nov 28 12:21:52 2006
@@ -543,6 +543,19 @@
// Darwin wants symbols to be quoted if they have complex names.
Mang->setUseQuotes(true);
+ // Prime text sections so they are adjacent. This reduces the likelihood a
+ // large data or debug section causes a branch to exceed 16M limit.
+ SwitchToTextSection(".section __TEXT,__textcoal_nt,coalesced,"
+ "pure_instructions");
+ if (TM.getRelocationModel() == Reloc::PIC_) {
+ SwitchToTextSection(".section __TEXT,__picsymbolstub1,symbol_stubs,"
+ "pure_instructions,32");
+ } else if (TM.getRelocationModel() == Reloc::DynamicNoPIC) {
+ SwitchToTextSection(".section __TEXT,__symbol_stub1,symbol_stubs,"
+ "pure_instructions,16");
+ }
+ SwitchToTextSection(TAI->getTextSection());
+
// Emit initial debug information.
DW.BeginModule(&M);
return false;
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