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| author | Owen Anderson <resistor@mac.com> | 2011-08-30 22:03:20 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2011-08-30 22:03:20 +0000 |
| commit | 543c89fb15b6846731cadca904cffe411c19196a (patch) | |
| tree | f0dc794694f73c90fbeb3e698ec94a1aec0aa3bc | |
| parent | 1732c2ebf665a541ce277518749021538752c452 (diff) | |
| download | bcm5719-llvm-543c89fb15b6846731cadca904cffe411c19196a.tar.gz bcm5719-llvm-543c89fb15b6846731cadca904cffe411c19196a.zip | |
Fix encoding of Thumb1 B instructions with immediate offsets, which is necessary for round-tripping.
llvm-svn: 138834
| -rw-r--r-- | llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp | 5 | ||||
| -rw-r--r-- | llvm/test/MC/ARM/basic-thumb-instructions.s | 5 |
2 files changed, 8 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp index a800b369bc2..b798a3c226d 100644 --- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp +++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp @@ -484,7 +484,10 @@ getThumbBLXTargetOpValue(const MCInst &MI, unsigned OpIdx, uint32_t ARMMCCodeEmitter:: getThumbBRTargetOpValue(const MCInst &MI, unsigned OpIdx, SmallVectorImpl<MCFixup> &Fixups) const { - return ::getBranchTargetOpValue(MI, OpIdx, ARM::fixup_arm_thumb_br, Fixups); + const MCOperand MO = MI.getOperand(OpIdx); + if (MO.isExpr()) + return ::getBranchTargetOpValue(MI, OpIdx, ARM::fixup_arm_thumb_br, Fixups); + return (MO.getImm() >> 1); } /// getThumbBCCTargetOpValue - Return encoding info for Thumb branch target. diff --git a/llvm/test/MC/ARM/basic-thumb-instructions.s b/llvm/test/MC/ARM/basic-thumb-instructions.s index d44ffeb7b7c..0e9eebdb110 100644 --- a/llvm/test/MC/ARM/basic-thumb-instructions.s +++ b/llvm/test/MC/ARM/basic-thumb-instructions.s @@ -105,12 +105,15 @@ _func: @------------------------------------------------------------------------------ b _baz beq _bar + b #1838 + b #-420 @ CHECK: b _baz @ encoding: [A,0xe0'A'] @ fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_br @ CHECK: beq _bar @ encoding: [A,0xd0] @ fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bcc - +@ CHECK: b #1838 @ encoding: [0x97,0xe3] +@ CHECK: b #-420 @ encoding: [0x2e,0xe7] @------------------------------------------------------------------------------ @ BICS |
