diff options
author | Chad Rosier <mcrosier@apple.com> | 2011-11-10 01:30:39 +0000 |
---|---|---|
committer | Chad Rosier <mcrosier@apple.com> | 2011-11-10 01:30:39 +0000 |
commit | 6cba97c5557ac51d8ae09b9f5cbad6891124db4d (patch) | |
tree | c5807d2a9b1da82cfd2004ec037bbe167fd7e181 /lib | |
parent | 83337302595a6b85523be8522c2b6105c8e159d1 (diff) | |
download | llvm-6cba97c5557ac51d8ae09b9f5cbad6891124db4d.tar.gz llvm-6cba97c5557ac51d8ae09b9f5cbad6891124db4d.tar.bz2 llvm-6cba97c5557ac51d8ae09b9f5cbad6891124db4d.tar.xz |
For immediate encodings of icmp, zero or sign extend first. Then
determine if the value is negative and flip the sign accordingly.
rdar://10422026
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144258 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Target/ARM/ARMFastISel.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp index 44c88aa7fd..4c47ff9cdf 100644 --- a/lib/Target/ARM/ARMFastISel.cpp +++ b/lib/Target/ARM/ARMFastISel.cpp @@ -1216,7 +1216,6 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value, // Check to see if the 2nd operand is a constant that we can encode directly // in the compare. - uint64_t Imm; int EncodedImm = 0; bool EncodeImm = false; bool isNegativeImm = false; @@ -1224,10 +1223,11 @@ bool ARMFastISel::ARMEmitCmp(const Value *Src1Value, const Value *Src2Value, if (SrcVT == MVT::i32 || SrcVT == MVT::i16 || SrcVT == MVT::i8 || SrcVT == MVT::i1) { const APInt &CIVal = ConstInt->getValue(); - - isNegativeImm = CIVal.isNegative(); - Imm = (isNegativeImm) ? (-CIVal).getZExtValue() : CIVal.getZExtValue(); - EncodedImm = (int)Imm; + EncodedImm = (isZExt) ? (int)CIVal.getZExtValue() : (int)CIVal.getSExtValue(); + if (EncodedImm < 0) { + isNegativeImm = true; + EncodedImm = -EncodedImm; + } EncodeImm = isThumb2 ? (ARM_AM::getT2SOImmVal(EncodedImm) != -1) : (ARM_AM::getSOImmVal(EncodedImm) != -1); } |