[PATCH] D13161: [PATCH, PR24373] Combine shifts for x86

[Simon Pilgrim via llvm-commits]

RKSimon added a comment.

Do you have any before/after perf timings?


================
Comment at: test/CodeGen/X86/sar_fold.ll:2
@@ +1,3 @@
+; RUN: llc < %s -O2 -march=x86 | FileCheck %s
+
+define i32 @shl16sar15(i32 %a) #0 {
----------------
Load tests?

Possibly regenerate this using update_llc_test_checks.py?

================
Comment at: test/CodeGen/X86/sar_fold64.ll:1
@@ +1,2 @@
+; RUN: llc < %s -O2 -march=x86-64 | FileCheck %s
+
----------------
Load tests?

Possibly regenerate this using update_llc_test_checks.py?


Repository:
  rL LLVM

http://reviews.llvm.org/D13161