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Thumb assembly parsing and encoding for B. 

llvm-svn: 137891
This commit is contained in:
Jim Grosbach 2011-08-17 22:57:40 +00:00
parent 2b21d86cfe
commit cbd4ab104b
2 changed files with 16 additions and 0 deletions
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4
llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
View File

@ -3035,6 +3035,10 @@ processInstruction(MCInst &Inst,
if (Inst.getOperand(3).getImm() < 8)
Inst.setOpcode(ARM::tADDi3);
break;
case ARM::tBcc:
// If the conditional is AL, we really want tB.
if (Inst.getOperand(1).getImm() == ARMCC::AL)
Inst.setOpcode(ARM::tB);
}
}

12
llvm/test/MC/ARM/basic-thumb-instructions.s
View File

@ -76,3 +76,15 @@ _func:
asrs r5, r2
@ CHECK: asrs r5, r2 @ encoding: [0x15,0x41]
@------------------------------------------------------------------------------
@ B
@------------------------------------------------------------------------------
b _baz
beq _bar
@ 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