Fix ssat and ssat16 encodings for ARM and Thumb. The bit position value
must be encoded decremented by one. Only add encoding tests for ssat16
because ssat can't be parsed yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132324 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMMCCodeEmitter.cpp b/lib/Target/ARM/ARMMCCodeEmitter.cpp
index 2b6d9fc..c5f727d 100644
--- a/lib/Target/ARM/ARMMCCodeEmitter.cpp
+++ b/lib/Target/ARM/ARMMCCodeEmitter.cpp
@@ -269,6 +269,9 @@
unsigned getMsbOpValue(const MCInst &MI, unsigned Op,
SmallVectorImpl<MCFixup> &Fixups) const;
+ unsigned getSsatBitPosValue(const MCInst &MI, unsigned Op,
+ SmallVectorImpl<MCFixup> &Fixups) const;
+
unsigned getRegisterListOpValue(const MCInst &MI, unsigned Op,
SmallVectorImpl<MCFixup> &Fixups) const;
unsigned getAddrMode6AddressOpValue(const MCInst &MI, unsigned Op,
@@ -1124,6 +1127,13 @@
}
unsigned ARMMCCodeEmitter::
+getSsatBitPosValue(const MCInst &MI, unsigned Op,
+ SmallVectorImpl<MCFixup> &Fixups) const {
+ // For ssat instructions, the bit position should be encoded decremented by 1
+ return MI.getOperand(Op).getImm()-1;
+}
+
+unsigned ARMMCCodeEmitter::
getRegisterListOpValue(const MCInst &MI, unsigned Op,
SmallVectorImpl<MCFixup> &Fixups) const {
// VLDM/VSTM: