switch jump table entry emission to be based on EntryKind
instead of magic variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94500 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 19cb41d..2893779 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -543,31 +543,54 @@
void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
const MachineBasicBlock *MBB,
- unsigned uid) const {
- // If the target supports GPRel, use it.
- if (MAI->getGPRel32Directive() != 0) {
+ unsigned uid) const {
+ const MCExpr *Value = 0;
+ switch (MJTI->getEntryKind()) {
+ case MachineJumpTableInfo::EK_BlockAddress:
+ // EK_BlockAddress - Each entry is a plain address of block, e.g.:
+ // .word LBB123
+ Value = MCSymbolRefExpr::Create(GetMBBSymbol(MBB->getNumber()), OutContext);
+ break;
+
+ case MachineJumpTableInfo::EK_GPRel32BlockAddress: {
+ // EK_GPRel32BlockAddress - Each entry is an address of block, encoded
+ // with a relocation as gp-relative, e.g.:
+ // .gprel32 LBB123
MCSymbol *MBBSym = GetMBBSymbol(MBB->getNumber());
OutStreamer.EmitGPRel32Value(MCSymbolRefExpr::Create(MBBSym, OutContext));
return;
}
-
- // If we have emitted set directives for the jump table entries, print
- // them rather than the entries themselves. If we're emitting PIC, then
- // emit the table entries as differences between two text section labels.
- const MCExpr *Val;
- if (MAI->getSetDirective()) {
- // If we used .set, reference the .set's symbol.
- Val = MCSymbolRefExpr::Create(GetJTSetSymbol(uid, MBB->getNumber()),
- OutContext);
- } else {
+
+ case MachineJumpTableInfo::EK_LabelDifference32: {
+ // EK_LabelDifference32 - Each entry is the address of the block minus
+ // the address of the jump table. This is used for PIC jump tables where
+ // gprel32 is not supported. e.g.:
+ // .word LBB123 - LJTI1_2
+ // If the .set directive is supported, this is emitted as:
+ // .set L4_5_set_123, LBB123 - LJTI1_2
+ // .word L4_5_set_123
+
+ // If we have emitted set directives for the jump table entries, print
+ // them rather than the entries themselves. If we're emitting PIC, then
+ // emit the table entries as differences between two text section labels.
+ if (MAI->getSetDirective()) {
+ // If we used .set, reference the .set's symbol.
+ Value = MCSymbolRefExpr::Create(GetJTSetSymbol(uid, MBB->getNumber()),
+ OutContext);
+ break;
+ }
// Otherwise, use the difference as the jump table entry.
- Val = MCSymbolRefExpr::Create(GetMBBSymbol(MBB->getNumber()), OutContext);
+ Value = MCSymbolRefExpr::Create(GetMBBSymbol(MBB->getNumber()), OutContext);
const MCExpr *JTI = MCSymbolRefExpr::Create(GetJTISymbol(uid), OutContext);
- Val = MCBinaryExpr::CreateSub(Val, JTI, OutContext);
+ Value = MCBinaryExpr::CreateSub(Value, JTI, OutContext);
+ break;
+ }
}
+ assert(Value && "Unknown entry kind!");
+
unsigned EntrySize = MJTI->getEntrySize(*TM.getTargetData());
- OutStreamer.EmitValue(Val, EntrySize, /*addrspace*/0);
+ OutStreamer.EmitValue(Value, EntrySize, /*addrspace*/0);
}