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; RUN: opt -reassociate -gvn -S < %s | FileCheck %s
; (x + 0.1234 * y) * (x + -0.1234 * y) -> (x + 0.1234 * y) * (x - 0.1234 * y)
define double @test1(double %x, double %y) {
; CHECK-LABEL: @test1
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fadd double %x, %mul
; CHECK-NEXT: fsub double %x, %mul
; CHECK-NEXT: fmul double %add{{.*}}, %add{{.*}}
; CHECK-NEXT: ret double %mul
%mul = fmul double 1.234000e-01, %y
%add = fadd double %mul, %x
%mul1 = fmul double -1.234000e-01, %y
%add2 = fadd double %mul1, %x
%mul3 = fmul double %add, %add2
ret double %mul3
}
; (x + -0.1234 * y) * (x + -0.1234 * y) -> (x - 0.1234 * y) * (x - 0.1234 * y)
define double @test2(double %x, double %y) {
; CHECK-LABEL: @test2
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fsub double %x, %mul
; CHECK-NEXT: fmul double %add{{.*}}, %add{{.*}}
; CHECK-NEXT: ret double %mul
%mul = fmul double %y, -1.234000e-01
%add = fadd double %mul, %x
%mul1 = fmul double %y, -1.234000e-01
%add2 = fadd double %mul1, %x
%mul3 = fmul double %add, %add2
ret double %mul3
}
; (x + 0.1234 * y) * (x - -0.1234 * y) -> (x + 0.1234 * y) * (x + 0.1234 * y)
define double @test3(double %x, double %y) {
; CHECK-LABEL: @test3
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fadd double %x, %mul
; CHECK-NEXT: fmul double %add{{.*}}, %add{{.*}}
; CHECK-NEXT: ret double
%mul = fmul double %y, 1.234000e-01
%add = fadd double %mul, %x
%mul1 = fmul double %y, -1.234000e-01
%add2 = fsub double %x, %mul1
%mul3 = fmul double %add, %add2
ret double %mul3
}
; Canonicalize (x - -1234 * y)
define i64 @test4(i64 %x, i64 %y) {
; CHECK-LABEL: @test4
; CHECK-NEXT: mul i64 %y, 1234
; CHECK-NEXT: add i64 %mul, %x
; CHECK-NEXT: ret i64 %sub
%mul = mul i64 %y, -1234
%sub = sub i64 %x, %mul
ret i64 %sub
}
; Canonicalize (x - -0.1234 * y)
define double @test5(double %x, double %y) {
; CHECK-LABEL: @test5
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fadd double %x, %mul
; CHECK-NEXT: ret double
%mul = fmul double -1.234000e-01, %y
%sub = fsub double %x, %mul
ret double %sub
}
; Don't modify (-0.1234 * y - x)
define double @test6(double %x, double %y) {
; CHECK-LABEL: @test6
; CHECK-NEXT: fmul double %y, -1.234000e-01
; CHECK-NEXT: fsub double %mul, %x
; CHECK-NEXT: ret double %sub
%mul = fmul double -1.234000e-01, %y
%sub = fsub double %mul, %x
ret double %sub
}
; Canonicalize (-0.1234 * y + x) -> (x - 0.1234 * y)
define double @test7(double %x, double %y) {
; CHECK-LABEL: @test7
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fsub double %x, %mul
; CHECK-NEXT: ret double %add
%mul = fmul double -1.234000e-01, %y
%add = fadd double %mul, %x
ret double %add
}
; Canonicalize (y * -0.1234 + x) -> (x - 0.1234 * y)
define double @test8(double %x, double %y) {
; CHECK-LABEL: @test8
; CHECK-NEXT: fmul double %y, 1.234000e-01
; CHECK-NEXT: fsub double %x, %mul
; CHECK-NEXT: ret double %add
%mul = fmul double %y, -1.234000e-01
%add = fadd double %mul, %x
ret double %add
}
; Canonicalize (x - -0.1234 / y)
define double @test9(double %x, double %y) {
; CHECK-LABEL: @test9
; CHECK-NEXT: fdiv double 1.234000e-01, %y
; CHECK-NEXT: fadd double %x, %div
; CHECK-NEXT: ret double
%div = fdiv double -1.234000e-01, %y
%sub = fsub double %x, %div
ret double %sub
}
; Don't modify (-0.1234 / y - x)
define double @test10(double %x, double %y) {
; CHECK-LABEL: @test10
; CHECK-NEXT: fdiv double -1.234000e-01, %y
; CHECK-NEXT: fsub double %div, %x
; CHECK-NEXT: ret double %sub
%div = fdiv double -1.234000e-01, %y
%sub = fsub double %div, %x
ret double %sub
}
; Canonicalize (-0.1234 / y + x) -> (x - 0.1234 / y)
define double @test11(double %x, double %y) {
; CHECK-LABEL: @test11
; CHECK-NEXT: fdiv double 1.234000e-01, %y
; CHECK-NEXT: fsub double %x, %div
; CHECK-NEXT: ret double %add
%div = fdiv double -1.234000e-01, %y
%add = fadd double %div, %x
ret double %add
}
; Canonicalize (y / -0.1234 + x) -> (x - y / 0.1234)
define double @test12(double %x, double %y) {
; CHECK-LABEL: @test12
; CHECK-NEXT: fdiv double %y, 1.234000e-01
; CHECK-NEXT: fsub double %x, %div
; CHECK-NEXT: ret double %add
%div = fdiv double %y, -1.234000e-01
%add = fadd double %div, %x
ret double %add
}
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