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Encodings for the compare instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119868 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-11-19 23:14:32 +00:00
parent b16926940e
commit 1228038ed9
1 changed files with 19 additions and 8 deletions
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27
lib/Target/ARM/ARMInstrThumb.td
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@ -316,11 +316,11 @@ let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
def tBRIND : TI<(outs), (ins GPR:$Rm), IIC_Br, "mov\tpc, $Rm",
[(brind GPR:$Rm)]>,
T1Special<{1,0,1,?}> {
T1Special<{1,0,?,?}> {
bits<4> Rm;
let Inst{6-3} = Rm;
let Inst{2-0} = 0b111; // <Rd> = Inst{7:2-0} = pc
let Inst{7} = 0b1; // <Rd> = Inst{7:2-0} = pc
let Inst{2-0} = 0b111;
}
}
@ -332,7 +332,6 @@ def tPOP_RET : T1I<(outs), (ins pred:$p, reglist:$regs, variable_ops),
"pop${p}\t$regs", []>,
T1Misc<{1,1,0,?,?,?,?}> {
bits<16> regs;
let Inst{8} = regs{15};
let Inst{7-0} = regs{7-0};
}
@ -442,13 +441,25 @@ let isBranch = 1, isTerminator = 1 in
// Compare and branch on zero / non-zero
let isBranch = 1, isTerminator = 1 in {
def tCBZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
"cbz\t$cmp, $target", []>,
T1Misc<{0,0,?,1,?,?,?}>;
def tCBZ : T1I<(outs), (ins tGPR:$Rn, brtarget:$target), IIC_Br,
"cbz\t$Rn, $target", []>,
T1Misc<{0,0,?,1,?,?,?}> {
bits<6> target;
bits<3> Rn;
let Inst{9} = target{5};
let Inst{7-3} = target{4-0};
let Inst{2-0} = Rn;
}
def tCBNZ : T1I<(outs), (ins tGPR:$cmp, brtarget:$target), IIC_Br,
"cbnz\t$cmp, $target", []>,
T1Misc<{1,0,?,1,?,?,?}>;
T1Misc<{1,0,?,1,?,?,?}> {
bits<6> target;
bits<3> Rn;
let Inst{9} = target{5};
let Inst{7-3} = target{4-0};
let Inst{2-0} = Rn;
}
}
// A8.6.218 Supervisor Call (Software Interrupt) -- for disassembly only