[x86] update cost table comments for maxnum; NFC

Follow-up suggested in D90613.

diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
index 16bd2e6..9789369 100644 (file)
--- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp
@@ -2528,12 +2528,12 @@ int X86TTIImpl::getTypeBasedIntrinsicInstrCost(
     { ISD::USUBSAT,    MVT::v16i16,  4 }, // 2 x 128-bit Op + extract/insert
     { ISD::USUBSAT,    MVT::v32i8,   4 }, // 2 x 128-bit Op + extract/insert
     { ISD::USUBSAT,    MVT::v8i32,   6 }, // 2 x 128-bit Op + extract/insert
-    { ISD::FMAXNUM,    MVT::f32,     3 }, // MAXPS + CMPUNORDPS + BLENDVPS
-    { ISD::FMAXNUM,    MVT::v4f32,   3 },
-    { ISD::FMAXNUM,    MVT::v8f32,   5 },
-    { ISD::FMAXNUM,    MVT::f64,     3 }, // MAXPD + CMPUNORDPD + BLENDVPD
-    { ISD::FMAXNUM,    MVT::v2f64,   3 },
-    { ISD::FMAXNUM,    MVT::v4f64,   5 },
+    { ISD::FMAXNUM,    MVT::f32,     3 }, // MAXSS + CMPUNORDSS + BLENDVPS
+    { ISD::FMAXNUM,    MVT::v4f32,   3 }, // MAXPS + CMPUNORDPS + BLENDVPS
+    { ISD::FMAXNUM,    MVT::v8f32,   5 }, // MAXPS + CMPUNORDPS + BLENDVPS + ?
+    { ISD::FMAXNUM,    MVT::f64,     3 }, // MAXSD + CMPUNORDSD + BLENDVPD
+    { ISD::FMAXNUM,    MVT::v2f64,   3 }, // MAXPD + CMPUNORDPD + BLENDVPD
+    { ISD::FMAXNUM,    MVT::v4f64,   5 }, // MAXPD + CMPUNORDPD + BLENDVPD + ?
     { ISD::FSQRT,      MVT::f32,    14 }, // SNB from http://www.agner.org/
     { ISD::FSQRT,      MVT::v4f32,  14 }, // SNB from http://www.agner.org/
     { ISD::FSQRT,      MVT::v8f32,  28 }, // SNB from http://www.agner.org/