[llvm] [InstCombine] Canonicalize fcmp with inf (PR #80986)

[Matt Arsenault via llvm-commits]

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@@ -177,6 +177,16 @@ define i1 @oge_pinf_fmf(half %x) {
   ret i1 %cmp
 }
 
+define <2 x i1> @olt_pinf_vec(<2 x half> %x) {
+; CHECK-LABEL: define <2 x i1> @olt_pinf_vec(
+; CHECK-SAME: <2 x half> [[X:%.*]]) {
+; CHECK-NEXT:    [[CMP:%.*]] = fcmp one <2 x half> [[X]], <half 0xH7C00, half 0xH7C00>
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %cmp = fcmp olt <2 x half> %x, <half 0xH7c00, half 0xH7c00>
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arsenm wrote:

-inf too 

https://github.com/llvm/llvm-project/pull/80986