; RUN: llc < %s -mtriple=arm64 | FileCheck %s
define i1 @testSwapCmpWithLSL64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithLSL64_1:
; CHECK: cmp x1, x0, lsl #1
; CHECK-NEXT: cset w0, gt
entry:
%shl = shl i64 %a, 1
%cmp = icmp slt i64 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSL64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithLSL64_63:
; CHECK: cmp x1, x0, lsl #63
; CHECK-NEXT: cset w0, gt
entry:
%shl = shl i64 %a, 63
%cmp = icmp slt i64 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSL32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithLSL32_1:
; CHECK: cmp w1, w0, lsl #1
; CHECK-NEXT: cset w0, gt
entry:
%shl = shl i32 %a, 1
%cmp = icmp slt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSL32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithLSL32_31:
; CHECK: cmp w1, w0, lsl #31
; CHECK-NEXT: cset w0, gt
entry:
%shl = shl i32 %a, 31
%cmp = icmp slt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSR64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithLSR64_1:
; CHECK: cmp x1, x0, lsr #1
; CHECK-NEXT: cset w0, gt
entry:
%lshr = lshr i64 %a, 1
%cmp = icmp slt i64 %lshr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSR64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithLSR64_63:
; CHECK: cmp x1, x0, lsr #63
; CHECK-NEXT: cset w0, gt
entry:
%lshr = lshr i64 %a, 63
%cmp = icmp slt i64 %lshr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSR32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithLSR32_1:
; CHECK: cmp w1, w0, lsr #1
; CHECK-NEXT: cset w0, gt
entry:
%lshr = lshr i32 %a, 1
%cmp = icmp slt i32 %lshr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithLSR32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithLSR32_31:
; CHECK: cmp w1, w0, lsr #31
; CHECK-NEXT: cset w0, gt
entry:
%lshr = lshr i32 %a, 31
%cmp = icmp slt i32 %lshr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithASR64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithASR64_1:
; CHECK: cmp x1, x0, asr #1
; CHECK-NEXT: cset w0, gt
entry:
%ashr = ashr i64 %a, 1
%cmp = icmp slt i64 %ashr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithASR64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithASR64_63:
; CHECK: cmp x1, x0, asr #63
; CHECK-NEXT: cset w0, gt
entry:
%ashr = ashr i64 %a, 63
%cmp = icmp slt i64 %ashr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithASR32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithASR32_1:
; CHECK: cmp w1, w0, asr #1
; CHECK-NEXT: cset w0, gt
entry:
%ashr = ashr i32 %a, 1
%cmp = icmp slt i32 %ashr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithASR32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithASR32_31:
; CHECK: cmp w1, w0, asr #31
; CHECK-NEXT: cset w0, gt
entry:
%ashr = ashr i32 %a, 31
%cmp = icmp slt i32 %ashr, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedZeroExtend32_64(i32 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedZeroExtend32_64
; CHECK: cmp x1, w0, uxtw #2
; CHECK-NEXT: cset w0, lo
entry:
%a64 = zext i32 %a to i64
%shl.0 = shl i64 %a64, 2
%cmp = icmp ugt i64 %shl.0, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedZeroExtend16_64(i16 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedZeroExtend16_64
; CHECK: cmp x1, w0, uxth #2
; CHECK-NEXT: cset w0, lo
entry:
%a64 = zext i16 %a to i64
%shl.0 = shl i64 %a64, 2
%cmp = icmp ugt i64 %shl.0, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedZeroExtend8_64(i8 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedZeroExtend8_64
; CHECK: cmp x1, w0, uxtb #4
; CHECK-NEXT: cset w0, lo
entry:
%a64 = zext i8 %a to i64
%shl.2 = shl i64 %a64, 4
%cmp = icmp ugt i64 %shl.2, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedZeroExtend16_32(i16 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedZeroExtend16_32
; CHECK: cmp w1, w0, uxth #3
; CHECK-NEXT: cset w0, lo
entry:
%a32 = zext i16 %a to i32
%shl = shl i32 %a32, 3
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedZeroExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedZeroExtend8_32
; CHECK: cmp w1, w0, uxtb #4
; CHECK-NEXT: cset w0, lo
entry:
%a32 = zext i8 %a to i32
%shl = shl i32 %a32, 4
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithTooLargeShiftedZeroExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithTooLargeShiftedZeroExtend8_32
; CHECK: and [[REG:w[0-9]+]], w0, #0xff
; CHECK: cmp w1, [[REG]], lsl #5
; CHECK-NEXT: cset w0, lo
entry:
%a32 = zext i8 %a to i32
%shl = shl i32 %a32, 5
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithZeroExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithZeroExtend8_32
; CHECK: cmp w1, w0, uxtb
; CHECK-NEXT: cset w0, lo
entry:
%a32 = zext i8 %a to i32
%cmp = icmp ugt i32 %a32, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedSignExtend32_64(i32 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedSignExtend32_64
; CHECK: cmp x1, w0, sxtw #2
; CHECK-NEXT: cset w0, lo
entry:
%a64 = sext i32 %a to i64
%shl.0 = shl i64 %a64, 2
%cmp = icmp ugt i64 %shl.0, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedSignExtend16_64(i16 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedSignExtend16_64
; CHECK: cmp x1, w0, sxth #2
; CHECK-NEXT: cset w0, lo
entry:
%a64 = sext i16 %a to i64
%shl.0 = shl i64 %a64, 2
%cmp = icmp ugt i64 %shl.0, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedSignExtend8_64(i8 %a, i64 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedSignExtend8_64
; CHECK: cmp x1, w0, sxtb #4
; CHECK-NEXT: cset w0, lo
entry:
%a64 = sext i8 %a to i64
%shl.2 = shl i64 %a64, 4
%cmp = icmp ugt i64 %shl.2, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedSignExtend16_32(i16 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedSignExtend16_32
; CHECK: cmp w1, w0, sxth #3
; CHECK-NEXT: cset w0, lo
entry:
%a32 = sext i16 %a to i32
%shl = shl i32 %a32, 3
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithShiftedSignExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithShiftedSignExtend8_32
; CHECK: cmp w1, w0, sxtb #4
; CHECK-NEXT: cset w0, lo
entry:
%a32 = sext i8 %a to i32
%shl = shl i32 %a32, 4
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithTooLargeShiftedSignExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithTooLargeShiftedSignExtend8_32
; CHECK: sxtb [[REG:w[0-9]+]], w0
; CHECK-NEXT: cmp w1, [[REG]], lsl #5
; CHECK-NEXT: cset w0, lo
entry:
%a32 = sext i8 %a to i32
%shl = shl i32 %a32, 5
%cmp = icmp ugt i32 %shl, %b
ret i1 %cmp
}
define i1 @testSwapCmpWithSignExtend8_32(i8 %a, i32 %b) {
; CHECK-LABEL: testSwapCmpWithSignExtend8_32
; CHECK: cmp w1, w0, sxtb
; CHECK-NEXT: cset w0, lo
entry:
%a32 = sext i8 %a to i32
%cmp = icmp ugt i32 %a32, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithLSL64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSL64_1:
; CHECK: cmn x1, x0, lsl #1
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i64 %a, 1
%na = sub i64 0, %shl
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: testing with a 62 bits shift as 63 has another optimization kicking in.
define i1 @testSwapCmnWithLSL64_62(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSL64_62:
; CHECK: cmn x1, x0, lsl #62
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i64 %a, 62
%na = sub i64 0, %shl
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: the 63 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithLSL64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSL64_63:
; CHECK: cmp x1, x0, lsl #63
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i64 %a, 63
%na = sub i64 0, %shl
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithLSL32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSL32_1:
; CHECK: cmn w1, w0, lsl #1
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i32 %a, 1
%na = sub i32 0, %shl
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
; Note: testing with a 30 bits shift as 30 has another optimization kicking in.
define i1 @testSwapCmnWithLSL32_30(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSL32_30:
; CHECK: cmn w1, w0, lsl #30
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i32 %a, 30
%na = sub i32 0, %shl
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
; Note: the 31 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithLSL32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSL32_31:
; CHECK: cmp w1, w0, lsl #31
; CHECK-NEXT: cset w0, ne
entry:
%shl = shl i32 %a, 31
%na = sub i32 0, %shl
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithLSR64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSR64_1:
; CHECK: cmn x1, x0, lsr #1
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i64 %a, 1
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: testing with a 62 bits shift as 63 has another optimization kicking in.
define i1 @testSwapCmnWithLSR64_62(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSR64_62:
; CHECK: cmn x1, x0, lsr #62
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i64 %a, 62
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: the 63 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithLSR64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithLSR64_63:
; CHECK: cmp x1, x0, asr #63
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i64 %a, 63
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithLSR32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSR32_1:
; CHECK: cmn w1, w0, lsr #1
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i32 %a, 1
%na = sub i32 0, %lshr
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
; Note: testing with a 30 bits shift as 31 has another optimization kicking in.
define i1 @testSwapCmnWithLSR32_30(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSR32_30:
; CHECK: cmn w1, w0, lsr #30
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i32 %a, 30
%na = sub i32 0, %lshr
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
; Note: the 31 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithLSR32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithLSR32_31:
; CHECK: cmp w1, w0, asr #31
; CHECK-NEXT: cset w0, ne
entry:
%lshr = lshr i32 %a, 31
%na = sub i32 0, %lshr
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithASR64_1(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithASR64_1:
; CHECK: cmn x1, x0, asr #3
; CHECK-NEXT: cset w0, ne
entry:
%lshr = ashr i64 %a, 3
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: testing with a 62 bits shift as 63 has another optimization kicking in.
define i1 @testSwapCmnWithASR64_62(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithASR64_62:
; CHECK: cmn x1, x0, asr #62
; CHECK-NEXT: cset w0, ne
entry:
%lshr = ashr i64 %a, 62
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
; Note: the 63 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithASR64_63(i64 %a, i64 %b) {
; CHECK-LABEL: testSwapCmnWithASR64_63:
; CHECK: cmp x1, x0, lsr #63
; CHECK-NEXT: cset w0, ne
entry:
%lshr = ashr i64 %a, 63
%na = sub i64 0, %lshr
%cmp = icmp ne i64 %na, %b
ret i1 %cmp
}
define i1 @testSwapCmnWithASR32_1(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithASR32_1:
; CHECK: cmn w1, w0, asr #1
; CHECK-NEXT: cset w0, eq
entry:
%lshr = ashr i32 %a, 1
%na = sub i32 0, %lshr
%cmp = icmp eq i32 %na, %b
ret i1 %cmp
}
; Note: testing with a 30 bits shift as 31 has another optimization kicking in.
define i1 @testSwapCmnWithASR32_30(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithASR32_30:
; CHECK: cmn w1, w0, asr #30
; CHECK-NEXT: cset w0, ne
entry:
%lshr = ashr i32 %a, 30
%na = sub i32 0, %lshr
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
; Note: the 31 bits shift triggers a different optimization path, which leads
; to a similar result in terms of performances. We try to catch here any change
; so that this test can be adapted should the optimization be done with the
; operand swap.
define i1 @testSwapCmnWithASR32_31(i32 %a, i32 %b) {
; CHECK-LABEL: testSwapCmnWithASR32_31:
; CHECK: cmp w1, w0, lsr #31
; CHECK-NEXT: cset w0, ne
entry:
%lshr = ashr i32 %a, 31
%na = sub i32 0, %lshr
%cmp = icmp ne i32 %na, %b
ret i1 %cmp
}
define i64 @testSwapCmpToCmnWithZeroExtend(i32 %a32, i16 %a16, i8 %a8, i64 %b64, i32 %b32) {
; CHECK-LABEL: testSwapCmpToCmnWithZeroExtend:
t0:
%conv0 = zext i32 %a32 to i64
%shl0 = shl i64 %conv0, 1
%na0 = sub i64 0, %shl0
%cmp0 = icmp ne i64 %na0, %b64
; CHECK: cmn x3, w0, uxtw #1
br i1 %cmp0, label %t1, label %end
t1:
%conv1 = zext i16 %a16 to i64
%shl1 = shl i64 %conv1, 4
%na1 = sub i64 0, %shl1
%cmp1 = icmp ne i64 %na1, %b64
; CHECK: cmn x3, w1, uxth #4
br i1 %cmp1, label %t2, label %end
t2:
%conv2 = zext i8 %a8 to i64
%shl2 = shl i64 %conv2, 3
%na2 = sub i64 0, %shl2
%cmp2 = icmp ne i64 %na2, %b64
; CHECK: cmn x3, w2, uxtb #3
br i1 %cmp2, label %t3, label %end
t3:
%conv3 = zext i16 %a16 to i32
%shl3 = shl i32 %conv3, 2
%na3 = sub i32 0, %shl3
%cmp3 = icmp ne i32 %na3, %b32
; CHECK: cmn w4, w1, uxth #2
br i1 %cmp3, label %t4, label %end
t4:
%conv4 = zext i8 %a8 to i32
%shl4 = shl i32 %conv4, 1
%na4 = sub i32 0, %shl4
%cmp4 = icmp ne i32 %na4, %b32
; CHECK: cmn w4, w2, uxtb #1
br i1 %cmp4, label %t5, label %end
t5:
%conv5 = zext i8 %a8 to i32
%shl5 = shl i32 %conv5, 5
%na5 = sub i32 0, %shl5
%cmp5 = icmp ne i32 %na5, %b32
; CHECK: and [[REG:w[0-9]+]], w2, #0xff
; CHECK: cmn w4, [[REG]], lsl #5
br i1 %cmp5, label %t6, label %end
t6:
%conv6 = zext i8 %a8 to i32
%na6 = sub i32 0, %conv6
%cmp6 = icmp ne i32 %na6, %b32
; CHECK: cmn w4, w2, uxtb
br i1 %cmp6, label %t7, label %end
t7:
ret i64 0
end:
ret i64 1
}
define i64 @testSwapCmpToCmnWithSignExtend(i32 %a32, i16 %a16, i8 %a8, i64 %b64, i32 %b32) {
; CHECK-LABEL: testSwapCmpToCmnWithSignExtend:
t0:
%conv0 = sext i32 %a32 to i64
%shl0 = shl i64 %conv0, 1
%na0 = sub i64 0, %shl0
%cmp0 = icmp ne i64 %na0, %b64
; CHECK: cmn x3, w0, sxtw #1
br i1 %cmp0, label %t1, label %end
t1:
%conv1 = sext i16 %a16 to i64
%shl1 = shl i64 %conv1, 4
%na1 = sub i64 0, %shl1
%cmp1 = icmp ne i64 %na1, %b64
; CHECK: cmn x3, w1, sxth #4
br i1 %cmp1, label %t2, label %end
t2:
%conv2 = sext i8 %a8 to i64
%shl2 = shl i64 %conv2, 3
%na2 = sub i64 0, %shl2
%cmp2 = icmp ne i64 %na2, %b64
; CHECK: cmn x3, w2, sxtb #3
br i1 %cmp2, label %t3, label %end
t3:
%conv3 = sext i16 %a16 to i32
%shl3 = shl i32 %conv3, 2
%na3 = sub i32 0, %shl3
%cmp3 = icmp ne i32 %na3, %b32
; CHECK: cmn w4, w1, sxth #2
br i1 %cmp3, label %t4, label %end
t4:
%conv4 = sext i8 %a8 to i32
%shl4 = shl i32 %conv4, 1
%na4 = sub i32 0, %shl4
%cmp4 = icmp ne i32 %na4, %b32
; CHECK: cmn w4, w2, sxtb #1
br i1 %cmp4, label %t5, label %end
t5:
%conv5 = sext i8 %a8 to i32
%shl5 = shl i32 %conv5, 5
%na5 = sub i32 0, %shl5
%cmp5 = icmp ne i32 %na5, %b32
; CHECK: sxtb [[REG:w[0-9]+]], w2
; CHECK: cmn w4, [[REG]], lsl #5
br i1 %cmp5, label %t6, label %end
t6:
%conv6 = sext i8 %a8 to i32
%na6 = sub i32 0, %conv6
%cmp6 = icmp ne i32 %na6, %b32
; CHECK: cmn w4, w2, sxtb
br i1 %cmp6, label %t7, label %end
t7:
ret i64 0
end:
ret i64 1
}