[X86] Add umin knownbits/demandedbits ult test for D94532

Author: RKSimon

llvm/test/CodeGen/X86/combine-umin.ll

@@ -1,11 +1,33 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=SSE2
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE41
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.2 | FileCheck %s --check-prefix=SSE42
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefix=AVX
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefix=AVX
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefix=AVX
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw | FileCheck %s --check-prefix=AVX
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefixes=CHECK,SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.1 | FileCheck %s --check-prefixes=CHECK,SSE41
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse4.2 | FileCheck %s --check-prefixes=CHECK,SSE42
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefixes=CHECK,AVX
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2 | FileCheck %s --check-prefixes=CHECK,AVX
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f | FileCheck %s --check-prefixes=CHECK,AVX
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512bw | FileCheck %s --check-prefixes=CHECK,AVX
+
+define i8 @test_demandedbits_umin_ult(i8 %a0, i8 %a1) {
+; CHECK-LABEL: test_demandedbits_umin_ult:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    orb $12, %dil
+; CHECK-NEXT:    orb $4, %sil
+; CHECK-NEXT:    andb $13, %dil
+; CHECK-NEXT:    andb $12, %sil
+; CHECK-NEXT:    movzbl %dil, %ecx
+; CHECK-NEXT:    movzbl %sil, %eax
+; CHECK-NEXT:    cmpb %al, %cl
+; CHECK-NEXT:    cmovbl %ecx, %eax
+; CHECK-NEXT:    # kill: def $al killed $al killed $eax
+; CHECK-NEXT:    retq
+  %lhs0 = and i8 %a0, 13  ; b1101
+  %rhs0 = and i8 %a1, 12  ; b1100
+  %lhs1 = or i8 %lhs0, 12 ; b1100
+  %rhs1 = or i8 %rhs0, 4  ; b0100
+  %umin = tail call i8 @llvm.umin.i8(i8 %lhs1, i8 %rhs1)
+  ret i8 %umin
+}
+declare i8 @llvm.umin.i8(i8, i8)
 
 define <8 x i16> @test_v8i16_nosignbit(<8 x i16> %a, <8 x i16> %b) {
 ; SSE2-LABEL: test_v8i16_nosignbit: