Rename test pr30298.ll to shrink_vmul_sse.ll, to make the name more meaningful, NFC.

Add PR number and comment in pr30298.ll to explain what is testing.

llvm-svn: 280843

diff --git a/llvm/test/CodeGen/X86/pr30298.ll b/llvm/test/CodeGen/X86/shrink_vmul_sse.ll
similarity index 91%
rename from llvm/test/CodeGen/X86/pr30298.ll
rename to llvm/test/CodeGen/X86/shrink_vmul_sse.ll
index 1e6dad0..c869dff 100644 (file)
--- a/llvm/test/CodeGen/X86/pr30298.ll
+++ b/llvm/test/CodeGen/X86/shrink_vmul_sse.ll
@@ -1,4 +1,8 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+;
+; PR30298: Check if the target doesn't have SSE2, compiler will not crash
+; or generate incorrect code because of vector mul width shrinking optimization.
+;
 ; RUN: llc -mtriple=i386-pc-linux-gnu -mattr=+sse < %s | FileCheck %s
 
 @c = external global i32*, align 8