Changes in directory llvm/lib/Target/ARM:
ARMRegisterInfo.cpp updated: 1.63 -> 1.64
---
Log message:
If sp offset will be materialized in a register. Clear the offset field of str
/ ldr.
---
Diffs of the changes: (+10 -8)
ARMRegisterInfo.cpp | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
Index: llvm/lib/Target/ARM/ARMRegisterInfo.cpp
diff -u llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.63
llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.64
--- llvm/lib/Target/ARM/ARMRegisterInfo.cpp:1.63 Wed Feb 7 15:18:32 2007
+++ llvm/lib/Target/ARM/ARMRegisterInfo.cpp Wed Feb 7 15:19:58 2007
@@ -762,16 +762,18 @@
return;
}
+ bool isThumSpillRestore = Opcode == ARM::tRestore || Opcode == ARM::tSpill;
+ if (AddrMode == ARMII::AddrModeTs) {
+ // Thumb tLDRspi, tSTRspi. These will change to instructions that use
+ // a different base register.
+ NumBits = 5;
+ Mask = (1 << NumBits) - 1;
+ }
// If this is a thumb spill / restore, we will be using a constpool load to
// materialize the offset.
- bool isThumSpillRestore = Opcode == ARM::tRestore || Opcode == ARM::tSpill;
- if (AddrMode == ARMII::AddrModeTs && !isThumSpillRestore) {
- if (AddrMode == ARMII::AddrModeTs) {
- // Thumb tLDRspi, tSTRspi. These will change to instructions that use
- // a different base register.
- NumBits = 5;
- Mask = (1 << NumBits) - 1;
- }
+ if (AddrMode == ARMII::AddrModeTs && isThumSpillRestore)
+ ImmOp.ChangeToImmediate(0);
+ else {
// Otherwise, it didn't fit. Pull in what we can to simplify the immed.
ImmedOffset = ImmedOffset & Mask;
if (isSub)
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