6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-20 14:29:27 +00:00
Code Issues Projects Releases Wiki Activity

DAGCombine: always constant fold FMA when target disable FP exceptions

Browse Source 
Summary: When trying to constant fold an FMA in the DAG, getNode()
fails to fold the FMA if an operand is not finite. In this case this
patch allows the constant folding if !TLI->hasFloatingPointExceptions()

Reviewers: resistor

Reviewed By: resistor

Subscribers: hfinkel, llvm-commits

Differential Revision: http://reviews.llvm.org/D6912

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226901 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Mehdi Amini 2015-01-23 07:07:20 +00:00
parent efd63170c8
commit 33cf319cd1
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -3620,7 +3620,7 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, EVT VT,
const APFloat &V3 = N3CFP->getValueAPF();
APFloat::opStatus s =
V1.fusedMultiplyAdd(V2, V3, APFloat::rmNearestTiesToEven);
if (s != APFloat::opInvalidOp)
if (!TLI->hasFloatingPointExceptions() || s != APFloat::opInvalidOp)
return getConstantFP(V1, VT);
}
break;