6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-23 14:25:07 +00:00
Code Issues Projects Releases Wiki Activity

Emit type checks late instead of early, this encourages

Browse Source 
structural matching code to be factored and shared this
shrinks the X86 isel table from 86537 to 83890 bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97442 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-03-01 07:54:59 +00:00
parent 7d892d6e6d
commit 60c0e37afc
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
utils/TableGen/DAGISelMatcherGen.cpp
View File

@@ -460,8 +460,9 @@ void MatcherGen::EmitMatchCode(const TreePatternNode *N,
// If N and NodeNoTypes don't agree on a type, then this is a case where we // If N and NodeNoTypes don't agree on a type, then this is a case where we
// need to do a type check. Emit the check, apply the tyep to NodeNoTypes and // need to do a type check. Emit the check, apply the tyep to NodeNoTypes and
// reinfer any correlated types. // reinfer any correlated types.
unsigned NodeType = EEVT::isUnknown;
if (NodeNoTypes->getExtTypes() != N->getExtTypes()) { if (NodeNoTypes->getExtTypes() != N->getExtTypes()) {
AddMatcher(new CheckTypeMatcher(N->getTypeNum(0))); NodeType = N->getTypeNum(0);
NodeNoTypes->setTypes(N->getExtTypes()); NodeNoTypes->setTypes(N->getExtTypes());
InferPossibleTypes(); InferPossibleTypes();
} }
@@ -488,6 +489,10 @@ void MatcherGen::EmitMatchCode(const TreePatternNode *N,
EmitLeafMatchCode(N); EmitLeafMatchCode(N);
else else
EmitOperatorMatchCode(N, NodeNoTypes); EmitOperatorMatchCode(N, NodeNoTypes);
if (NodeType != EEVT::isUnknown)
AddMatcher(new CheckTypeMatcher((MVT::SimpleValueType)NodeType));
} }
/// EmitMatcherCode - Generate the code that matches the predicate of this /// EmitMatcherCode - Generate the code that matches the predicate of this