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| author | Chris Lattner <sabre@nondot.org> | 2007-04-02 05:59:42 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2007-04-02 05:59:42 +0000 |
| commit | aa43e9f73b4ccd700530803803e074eff9b3dca5 (patch) | |
| tree | 6ecd1be06e78ae1c8daec328d1671e7876ef6ba5 | |
| parent | 465b7157d11c782f98c2f9f2d5ce45d94c38443e (diff) | |
| download | external_llvm-aa43e9f73b4ccd700530803803e074eff9b3dca5.zip external_llvm-aa43e9f73b4ccd700530803803e074eff9b3dca5.tar.gz external_llvm-aa43e9f73b4ccd700530803803e074eff9b3dca5.tar.bz2 | |
Fix a bug which caused us to never be able to use signed comparisons for
equality comparisons of a constant. This allows us to codegen the 'sintzero'
loop in PR1288 as:
LBB1_1: ;cond_next
li r4, 0
addi r2, r2, 1
stw r4, 0(r3)
addi r3, r3, 4
cmpwi cr0, r2, -1
bne cr0, LBB1_1 ;cond_next
instead of:
LBB1_1: ;cond_next
addi r2, r2, 1
li r4, 0
xoris r5, r2, 65535
stw r4, 0(r3)
addi r3, r3, 4
cmplwi cr0, r5, 65535
bne cr0, LBB1_1 ;cond_next
This implements CodeGen/PowerPC/compare-simm.ll, and also cuts 74
instructions out of kc++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35590 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp index c8a7738..7a4b29f 100644 --- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp +++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp @@ -508,7 +508,7 @@ SDOperand PPCDAGToDAGISel::SelectCC(SDOperand LHS, SDOperand RHS, return SDOperand(CurDAG->getTargetNode(PPC::CMPLWI, MVT::i32, LHS, getI32Imm(Imm & 0xFFFF)), 0); // If this is a 16-bit signed immediate, fold it. - if (isInt16(Imm)) + if (isInt16((int)Imm)) return SDOperand(CurDAG->getTargetNode(PPC::CMPWI, MVT::i32, LHS, getI32Imm(Imm & 0xFFFF)), 0); |