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Add extra SEXT pattern.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77920 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Richard Osborne
2009-08-02 22:45:24 +00:00
parent 3bb9b9a1ab
commit d558ea5e0a
2 changed files with 48 additions and 0 deletions
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16
lib/Target/XCore/XCoreInstrInfo.td
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@@ -95,6 +95,12 @@ def neg_xform : SDNodeXForm<imm, [{
return getI32Imm(-value);
}]>;
def bpwsub_xform : SDNodeXForm<imm, [{
// Transformation function: 32-imm
uint32_t value = N->getZExtValue();
return getI32Imm(32-value);
}]>;
def div4neg_xform : SDNodeXForm<imm, [{
// Transformation function: -imm/4
uint32_t value = N->getZExtValue();
@@ -162,6 +168,14 @@ def immBitp : PatLeaf<(imm), [{
|| value == 32;
}]>;
def immBpwSubBitp : PatLeaf<(imm), [{
uint32_t value = (uint32_t)N->getZExtValue();
return (value >= 24 && value <= 31)
|| value == 16
|| value == 8
|| value == 0;
}]>;
def lda16f : PatFrag<(ops node:$addr, node:$offset),
(add node:$addr, (shl node:$offset, 1))>;
def lda16b : PatFrag<(ops node:$addr, node:$offset),
@@ -989,3 +1003,5 @@ def : Pat<(mul GRRegs:$src, -3),
def : Pat<(sra GRRegs:$src, 31),
(ASHR_l2rus GRRegs:$src, 32)>;
def : Pat<(sra (shl GRRegs:$src, immBpwSubBitp:$imm), immBpwSubBitp:$imm),
(SEXT_rus GRRegs:$src, (bpwsub_xform immBpwSubBitp:$imm))>;