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Exapnd br_jt into indirect branch. Provide pattern for indirect branches.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-07-16 14:07:24 +00:00
parent 57b04e6fa7
commit 983d3a1ee5
2 changed files with 7 additions and 0 deletions
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1
lib/Target/SystemZ/SystemZISelLowering.cpp
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@ -62,6 +62,7 @@ SystemZTargetLowering::SystemZTargetLowering(SystemZTargetMachine &tm) :
setOperationAction(ISD::RET, MVT::Other, Custom);
setOperationAction(ISD::BR_JT, MVT::Other, Expand);
setOperationAction(ISD::BRCOND, MVT::Other, Expand);
setOperationAction(ISD::BR_CC, MVT::i32, Custom);
setOperationAction(ISD::BR_CC, MVT::i64, Custom);

6
lib/Target/SystemZ/SystemZInstrInfo.td
View File

@ -99,6 +99,12 @@ let isBranch = 1, isTerminator = 1 in {
let isBarrier = 1 in
def JMP : Pseudo<(outs), (ins brtarget:$dst), "j\t{$dst}", [(br bb:$dst)]>;
let isBarrier = 1, isIndirectBranch = 1 in {
def JMPr : Pseudo<(outs), (ins GR64:$dst), "br\t{$dst}", [(brind GR64:$dst)]>;
// FIXME: displacement here is 12 bits
def JMPrri : Pseudo<(outs), (ins rriaddr:$dst), "b\t{$dst}", [(brind rriaddr:$dst)]>;
}
let Uses = [PSW] in {
def JE : Pseudo<(outs), (ins brtarget:$dst),
"je\t$dst",