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fix a type mismatch in this pattern, where we were using an i64 imm in a

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place where an i32 imm was required, the old isel just got lucky.

This fixes CodeGen/X86/x86-64-and-mask.ll



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96894 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2010-02-23 06:09:57 +00:00
parent 53d09bd009
commit be5ad7dce2
1 changed files with 7 additions and 1 deletions
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8
lib/Target/X86/X86Instr64bit.td
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@ -65,12 +65,18 @@ def i64immSExt8 : PatLeaf<(i64 imm), [{
return (int64_t)N->getZExtValue() == (int8_t)N->getZExtValue();
}]>;
def GetLo32XForm : SDNodeXForm<imm, [{
// Transformation function: get the low 32 bits.
return getI32Imm((unsigned)N->getZExtValue());
}]>;
def i64immSExt32 : PatLeaf<(i64 imm), [{
// i64immSExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// sign extended field.
return (int64_t)N->getZExtValue() == (int32_t)N->getZExtValue();
}]>;
def i64immZExt32 : PatLeaf<(i64 imm), [{
// i64immZExt32 predicate - True if the 64-bit immediate fits in a 32-bit
// unsignedsign extended field.
@ -1981,7 +1987,7 @@ def : Pat<(and GR64:$src, i64immZExt32:$imm),
(i64 0),
(AND32ri
(EXTRACT_SUBREG GR64:$src, x86_subreg_32bit),
imm:$imm),
(i32 (GetLo32XForm imm:$imm))),
x86_subreg_32bit)>;
// r & (2^32-1) ==> movz