Changes in directory llvm/lib/CodeGen:
AsmPrinter.cpp updated: 1.136 -> 1.137
---
Log message:
add new JumpTableSpecialLabelPrefix hook to asmprinter for jumptable emission.
---
Diffs of the changes: (+9 -1)
AsmPrinter.cpp | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/AsmPrinter.cpp
diff -u llvm/lib/CodeGen/AsmPrinter.cpp:1.136
llvm/lib/CodeGen/AsmPrinter.cpp:1.137
--- llvm/lib/CodeGen/AsmPrinter.cpp:1.136 Mon Jan 15 21:42:04 2007
+++ llvm/lib/CodeGen/AsmPrinter.cpp Wed Jan 17 19:12:56 2007
@@ -244,6 +244,13 @@
if (EmittedSets.insert(JTBBs[ii]).second)
printSetLabel(i, JTBBs[ii]);
+ // On some targets (e.g. darwin) we want to emit two consequtive labels
+ // before each jump table. The first label is never referenced, but tells
+ // the assembler and linker the extents of the jump table object. The
+ // second label is actually referenced by the code.
+ if (const char *JTLabelPrefix = TAI->getJumpTableSpecialLabelPrefix())
+ O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
+
O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
<< '_' << i << ":\n";
@@ -259,7 +266,8 @@
<< '_' << i << "_set_" << JTBBs[ii]->getNumber();
} else if (IsPic) {
printBasicBlockLabel(JTBBs[ii], false, false);
- //If the arch uses custom Jump Table directives, don't calc relative
to JT
+ // If the arch uses custom Jump Table directives, don't calc relative
to
+ // JT
if (!HadJTEntryDirective)
O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
<< getFunctionNumber() << '_' << i;
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