[X86] v4f32-immediate.ll - replace X32 check prefixes with X86

We try to only use X32 for gnux32 triple tests.

Author: RKSimon

llvm/test/CodeGen/X86/v4f32-immediate.ll

@@ -1,12 +1,12 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=i686-unknown -mattr=+sse | FileCheck %s --check-prefix=X32
+; RUN: llc < %s -mtriple=i686-unknown -mattr=+sse | FileCheck %s --check-prefix=X86
 ; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+sse | FileCheck %s --check-prefix=X64
 
 define <4 x float> @foo() {
-; X32-LABEL: foo:
-; X32:       # %bb.0:
-; X32-NEXT:    movaps {{.*#+}} xmm0 = [3.22354245E+0,2.29999995E+0,1.20000005E+0,1.00000001E-1]
-; X32-NEXT:    retl
+; X86-LABEL: foo:
+; X86:       # %bb.0:
+; X86-NEXT:    movaps {{.*#+}} xmm0 = [3.22354245E+0,2.29999995E+0,1.20000005E+0,1.00000001E-1]
+; X86-NEXT:    retl
 ;
 ; X64-LABEL: foo:
 ; X64:       # %bb.0: