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| ; RUN: llc -o - %s -mtriple=aarch64-- | FileCheck %s
; CHECK-LABEL: and1:
; CHECK: and {{w[0-9]+}}, w0, #0xfffffffd
define void @and1(i32 %a, i8* nocapture %p) {
entry:
%and = and i32 %a, 253
%conv = trunc i32 %and to i8
store i8 %conv, i8* %p, align 1
ret void
}
; (a & 0x3dfd) | 0xffffc000
;
; CHECK-LABEL: and2:
; CHECK: and {{w[0-9]+}}, w0, #0xfdfdfdfd
define i32 @and2(i32 %a) {
entry:
%and = and i32 %a, 15869
%or = or i32 %and, -16384
ret i32 %or
}
; (a & 0x19) | 0xffffffc0
;
; CHECK-LABEL: and3:
; CHECK: and {{w[0-9]+}}, w0, #0x99999999
define i32 @and3(i32 %a) {
entry:
%and = and i32 %a, 25
%or = or i32 %and, -64
ret i32 %or
}
; (a & 0xc5600) | 0xfff1f1ff
;
; CHECK-LABEL: and4:
; CHECK: and {{w[0-9]+}}, w0, #0xfffc07ff
define i32 @and4(i32 %a) {
entry:
%and = and i32 %a, 787968
%or = or i32 %and, -921089
ret i32 %or
}
; Make sure we don't shrink or optimize an XOR's immediate operand if the
; immediate is -1. Instruction selection turns (and ((xor $mask, -1), $v0)) into
; a BIC.
; CHECK-LABEL: xor1:
; CHECK: mov [[R0:w[0-9]+]], #56
; CHECK: bic {{w[0-9]+}}, [[R0]], w0, lsl #3
define i32 @xor1(i32 %a) {
entry:
%shl = shl i32 %a, 3
%xor = and i32 %shl, 56
%and = xor i32 %xor, 56
ret i32 %and
}
; Check that, when (and %t1, 129) is transformed to (and %t0, 0),
; (xor %arg, 129) doesn't get transformed to (xor %arg, 0).
;
; CHECK-LABEL: PR33100:
; CHECK: mov w[[R0:[0-9]+]], #129
; CHECK: eor {{x[0-9]+}}, {{x[0-9]+}}, x[[R0]]
define i64 @PR33100(i64 %arg) {
entry:
%alloca0 = alloca i64
store i64 8, i64* %alloca0, align 4
%t0 = load i64, i64* %alloca0, align 4
%t1 = shl i64 %arg, %t0
%and0 = and i64 %t1, 129
%xor0 = xor i64 %arg, 129
%t2 = add i64 %and0, %xor0
ret i64 %t2
}
|