[llvm] 0fac389 - [X86] Fix mistake in comment on LowerFROUND. NFC

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2022-01-13T12:22:04-08:00
New Revision: 0fac3891ecd9761daf6f4d709bb00fcc90079f54

URL: https://github.com/llvm/llvm-project/commit/0fac3891ecd9761daf6f4d709bb00fcc90079f54
DIFF: https://github.com/llvm/llvm-project/commit/0fac3891ecd9761daf6f4d709bb00fcc90079f54.diff

LOG: [X86] Fix mistake in comment on LowerFROUND. NFC

The code uses floor not trunc.

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86ISelLowering.cpp

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 474ff4e8bd98d..27ce65b1ebfdb 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -22614,7 +22614,7 @@ SDValue X86TargetLowering::lowerFaddFsub(SDValue Op, SelectionDAG &DAG) const {
 /// ISD::FROUND is defined to round to nearest with ties rounding away from 0.
 /// This mode isn't supported in hardware on X86. But as long as we aren't
 /// compiling with trapping math, we can emulate this with
-/// floor(X + copysign(nextafter(0.5, 0.0), X)).
+/// trunc(X + copysign(nextafter(0.5, 0.0), X)).
 static SDValue LowerFROUND(SDValue Op, SelectionDAG &DAG) {
   SDValue N0 = Op.getOperand(0);
   SDLoc dl(Op);