[DAGCombiner] Add target hook function to decide folding (mul (add x, c1), c2)

[llvm-project.git] / llvm / test / Transforms / InstCombine / zext-fold.ll

; NOTE: Assertions have been autogenerated by update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s

; PR1570

define i32 @test2(float %X, float %Y) {
; CHECK-LABEL: @test2(
; CHECK-NEXT:    [[TMP3:%.*]] = fcmp ord float %X, %Y
; CHECK-NEXT:    [[TOBOOLNOT5:%.*]] = zext i1 [[TMP3]] to i32
; CHECK-NEXT:    ret i32 [[TOBOOLNOT5]]
;
  %tmp3 = fcmp uno float %X, %Y
  %tmp34 = zext i1 %tmp3 to i8
  %tmp = xor i8 %tmp34, 1
  %toBoolnot5 = zext i8 %tmp to i32
  ret i32 %toBoolnot5
}