[llvm] [X86] Make test more robust against different builds

Summary:
Rationale:
Using the --debug-only flag requires a debug build. Also, the debug output is not always consistent over different builds.
This change avoids all problems by just testing the generated assembly for AVX.

Reviewers: craig.topper, mehdi_amini, nicolasvasilache

Reviewed By: craig.topper

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D78609

llvm/test/CodeGen/X86/pr45563.ll

@@ -1,4 +1,4 @@
-; RUN: llc < %s -debug-only=isel -O3 -mattr=avx  2>&1 | FileCheck %s
+; RUN: llc < %s -O3 -mattr=avx | FileCheck %s
 
 ; Bug 45563:
 ; The LowerMLOAD() method AVX masked load branch should
@@ -12,7 +12,8 @@
 
 define <16 x double> @bug45563(<16 x double>* %addr, <16 x double> %dst, <16 x i64> %e, <16 x i64> %f) {
 ; CHECK-LABEL: bug45563:
-; CHECK:       v4f64 = vselect
+; CHECK:       vmaskmovpd
+; CHECK:       vblendvpd
   %mask = icmp slt <16 x i64> %e, %f
   %res = call <16 x double> @llvm.masked.load.v16f64.p0v16f64(<16 x double>* %addr, i32 4, <16 x i1>%mask, <16 x double> %dst)
   ret <16 x double> %res