[llvm] [PowerPC] Optimize not equal compares against zero vectors (PR #150422)

[via llvm-commits]

================
@@ -1031,7 +1031,7 @@ define <4 x float> @hoo3_fmf(<4 x float> %a) #1 {
 ; CHECK-P7-NEXT:    vmaddfp 5, 5, 0, 3
 ; CHECK-P7-NEXT:    vmaddfp 3, 5, 4, 3
 ; CHECK-P7-NEXT:    vxor 4, 4, 4
-; CHECK-P7-NEXT:    vcmpeqfp 2, 2, 4
+; CHECK-P7-NEXT:    vcmpgefp 2, 4, 2
----------------
Himadhith wrote:

This was due to the attribute `denormal-fp-math` being present in the recipest.ll file. I have modified the code now to not handle `fp` values as comparison works different with the flag `denormal-fp-math` enabled.

https://github.com/llvm/llvm-project/pull/150422