ret i32 undef
}
-; ((X << C) - Y) + Z --> (Z - Y) + (X << C)
+; ((X >> C) - Y) + Z --> (Z - Y) + (X >> C)
define i32 @commute_subop0(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: commute_subop0:
; CHECK: // %bb.0:
ret i32 %add
}
-; ((X >> C) - Y) + Z --> (Z - Y) + (X >> C)
+; ((X << C) - Y) + Z --> (Z - Y) + (X << C)
define i32 @commute_subop0_lshr(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: commute_subop0_lshr:
; CHECK: // %bb.0:
ret i32 %add
}
-; ((X >> C) - Y) + Z --> (Z - Y) + (X >> C)
+; ((X << C) - Y) + Z --> (Z - Y) + (X << C)
define i32 @commute_subop0_ashr(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: commute_subop0_ashr:
; CHECK: // %bb.0:
ret i32 %add
}
-; ((sext X) - Y) + Z --> (Z - Y) + (sext X)
-define i64 @commute_subop0_sext(i32 %x, i64 %y, i64 %z) {
-; CHECK-LABEL: commute_subop0_sext:
-; CHECK: // %bb.0:
-; CHECK-NEXT: // kill: def $w0 killed $w0 def $x0
-; CHECK-NEXT: sxtw x8, w0
-; CHECK-NEXT: sub x8, x8, x1
-; CHECK-NEXT: add x0, x8, x2
-; CHECK-NEXT: ret
- %sext = sext i32 %x to i64
- %sub = sub i64 %sext, %y
- %add = add i64 %sub, %z
- ret i64 %add
-}
-
-; ((sext_inreg X) - Y) + Z --> (Z - Y) + (sext_inreg X)
-define i64 @commute_subop0_sext_inreg(i64 %x, i64 %y, i64 %z) {
-; CHECK-LABEL: commute_subop0_sext_inreg:
-; CHECK: // %bb.0:
-; CHECK-NEXT: sxth x8, w0
-; CHECK-NEXT: sub x8, x8, x1
-; CHECK-NEXT: add x0, x8, x2
-; CHECK-NEXT: ret
- %shl = shl i64 %x, 48
- %ashr = ashr i64 %shl, 48
- %sub = sub i64 %ashr, %y
- %add = add i64 %sub, %z
- ret i64 %add
-}
-
-; ((zext X) - Y) + Z --> (Z - Y) + (zext X)
-define i32 @commute_subop0_zext(i16 %x, i32 %y, i32 %z) {
-; CHECK-LABEL: commute_subop0_zext:
-; CHECK: // %bb.0:
-; CHECK-NEXT: and w8, w0, #0xffff
-; CHECK-NEXT: sub w8, w8, w1
-; CHECK-NEXT: add w0, w8, w2
-; CHECK-NEXT: ret
- %zext = zext i16 %x to i32
- %sub = sub i32 %zext, %y
- %add = add i32 %sub, %z
- ret i32 %add
-}
-
-
-; ((anyext X) - Y) + Z --> (Z - Y) + (anyext X)
-define i8 @commute_subop0_anyext(i16 %a, i16 %b, i32 %c) {
-; CHECK-LABEL: commute_subop0_anyext:
-; CHECK: // %bb.0:
-; CHECK-NEXT: mov w8, #222
-; CHECK-NEXT: mov w9, #111
-; CHECK-NEXT: mul w8, w1, w8
-; CHECK-NEXT: neg w8, w8
-; CHECK-NEXT: madd w8, w0, w9, w8
-; CHECK-NEXT: add w8, w8, w2
-; CHECK-NEXT: add w0, w8, w8, lsl #5
-; CHECK-NEXT: ret
- %aa = mul i16 %a, 111
- %bb = mul i16 %b, 222
- %a_32 = zext i16 %aa to i32
- %b_32 = zext i16 %bb to i32
- %sub = sub i32 %a_32, %b_32
- %add = add i32 %sub, %c
- %trunc = trunc i32 %add to i8
- %r = mul i8 %trunc, 33
- ret i8 %r
-}
-
-; ((X and C) - Y) + Z --> (Z - Y) + (X and C)
-define i32 @commute_subop0_and(i32 %x, i32 %y, i32 %z) {
-; CHECK-LABEL: commute_subop0_and:
-; CHECK: // %bb.0:
-; CHECK-NEXT: and w8, w0, #0xff
-; CHECK-NEXT: sub w8, w8, w1
-; CHECK-NEXT: add w0, w8, w2
-; CHECK-NEXT: ret
- %and = and i32 %x, 255
- %sub = sub i32 %and, %y
- %add = add i32 %sub, %z
- ret i32 %add
-}
-
-; Z + ((X << C) - Y) --> (Z - Y) + (X << C)
+; Z + ((X >> C) - Y) --> (Z - Y) + (X >> C)
define i32 @commute_subop0_cadd(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: commute_subop0_cadd:
; CHECK: // %bb.0:
ret i32 %add
}
-; Y + ((X << C) - X) --> (Y - X) + (X << C)
+; Y + ((X >> C) - X) --> (Y - X) + (X >> C)
define i32 @commute_subop0_mul(i32 %x, i32 %y) {
; CHECK-LABEL: commute_subop0_mul:
; CHECK: // %bb.0:
ret i32 %add
}
-; negative case for ((X << C) - Y) + Z --> (Z - Y) + (X << C)
+; negative case for ((X >> C) - Y) + Z --> (Z - Y) + (X >> C)
; Y can't be constant to avoid dead loop
define i32 @commute_subop0_zconst(i32 %x, i32 %y) {
; CHECK-LABEL: commute_subop0_zconst:
ret i32 %add
}
-; negative case for ((X << C) - Y) + Z --> (Z - Y) + (X << C)
+; negative case for ((X >> C) - Y) + Z --> (Z - Y) + (X >> C)
; Y can't be shift C also to avoid dead loop
define i32 @commute_subop0_zshiftc_oneuse(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: commute_subop0_zshiftc_oneuse: