[PATCH] D38276: [X86] Remove dead code from X86ISelDAGToDAG.cpp multiply handling

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 116929.
craig.topper added a comment.

Breaking this up into smaller pieces. Starting with just the X86ISD::UMUL piece since that one is easy.


https://reviews.llvm.org/D38276

Files:
  lib/Target/X86/X86ISelDAGToDAG.cpp


Index: lib/Target/X86/X86ISelDAGToDAG.cpp
===================================================================
--- lib/Target/X86/X86ISelDAGToDAG.cpp
+++ lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -2594,7 +2594,7 @@
     unsigned LoReg;
     switch (NVT.SimpleTy) {
     default: llvm_unreachable("Unsupported VT!");
-    case MVT::i8:  LoReg = X86::AL;  Opc = X86::MUL8r; break;
+    // MVT::i8 is handled by X86ISD::UMUL8.
     case MVT::i16: LoReg = X86::AX;  Opc = X86::MUL16r; break;
     case MVT::i32: LoReg = X86::EAX; Opc = X86::MUL32r; break;
     case MVT::i64: LoReg = X86::RAX; Opc = X86::MUL64r; break;


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