1 ; RUN: llc < %s -march=arm64 -mcpu=cyclone | FileCheck %s 2 3 define i128 @shl(i128 %r, i128 %s) nounwind readnone { 4 ; CHECK-LABEL: shl: 5 ; CHECK: orr w[[SIXTY_FOUR:[0-9]+]], wzr, #0x40 6 ; CHECK: sub [[REV_SHIFT:x[0-9]+]], x[[SIXTY_FOUR]], x2 7 ; CHECK: lsr [[LO_FOR_HI_NORMAL:x[0-9]+]], x0, [[REV_SHIFT]] 8 ; CHECK: cmp x2, #0 9 ; CHECK: csel [[LO_FOR_HI:x[0-9]+]], xzr, [[LO_FOR_HI_NORMAL]], eq 10 ; CHECK: lsl [[HI_FOR_HI:x[0-9]+]], x1, x2 11 ; CHECK: orr [[HI_NORMAL:x[0-9]+]], [[LO_FOR_HI]], [[HI_FOR_HI]] 12 ; CHECK: sub [[EXTRA_SHIFT:x[0-9]+]], x2, #64 13 ; CHECK: lsl [[HI_BIG_SHIFT:x[0-9]+]], x0, [[EXTRA_SHIFT]] 14 ; CHECK: cmp [[EXTRA_SHIFT]], #0 15 ; CHECK: csel x1, [[HI_BIG_SHIFT]], [[HI_NORMAL]], ge 16 ; CHECK: lsl [[SMALLSHIFT_LO:x[0-9]+]], x0, x2 17 ; CHECK: csel x0, xzr, [[SMALLSHIFT_LO]], ge 18 ; CHECK: ret 19 20 %shl = shl i128 %r, %s 21 ret i128 %shl 22 } 23 24 define i128 @ashr(i128 %r, i128 %s) nounwind readnone { 25 ; CHECK-LABEL: ashr: 26 ; CHECK: orr w[[SIXTY_FOUR:[0-9]+]], wzr, #0x40 27 ; CHECK: sub [[REV_SHIFT:x[0-9]+]], x[[SIXTY_FOUR]], x2 28 ; CHECK: lsl [[HI_FOR_LO_NORMAL:x[0-9]+]], x1, [[REV_SHIFT]] 29 ; CHECK: cmp x2, #0 30 ; CHECK: csel [[HI_FOR_LO:x[0-9]+]], xzr, [[HI_FOR_LO_NORMAL]], eq 31 ; CHECK: lsr [[LO_FOR_LO:x[0-9]+]], x0, x2 32 ; CHECK: orr [[LO_NORMAL:x[0-9]+]], [[LO_FOR_LO]], [[HI_FOR_LO]] 33 ; CHECK: sub [[EXTRA_SHIFT:x[0-9]+]], x2, #64 34 ; CHECK: asr [[LO_BIG_SHIFT:x[0-9]+]], x1, [[EXTRA_SHIFT]] 35 ; CHECK: cmp [[EXTRA_SHIFT]], #0 36 ; CHECK: csel x0, [[LO_BIG_SHIFT]], [[LO_NORMAL]], ge 37 ; CHECK: asr [[SMALLSHIFT_HI:x[0-9]+]], x1, x2 38 ; CHECK: asr [[BIGSHIFT_HI:x[0-9]+]], x1, #63 39 ; CHECK: csel x1, [[BIGSHIFT_HI]], [[SMALLSHIFT_HI]], ge 40 ; CHECK: ret 41 42 %shr = ashr i128 %r, %s 43 ret i128 %shr 44 } 45 46 define i128 @lshr(i128 %r, i128 %s) nounwind readnone { 47 ; CHECK-LABEL: lshr: 48 ; CHECK: orr w[[SIXTY_FOUR:[0-9]+]], wzr, #0x40 49 ; CHECK: sub [[REV_SHIFT:x[0-9]+]], x[[SIXTY_FOUR]], x2 50 ; CHECK: lsl [[HI_FOR_LO_NORMAL:x[0-9]+]], x1, [[REV_SHIFT]] 51 ; CHECK: cmp x2, #0 52 ; CHECK: csel [[HI_FOR_LO:x[0-9]+]], xzr, [[HI_FOR_LO_NORMAL]], eq 53 ; CHECK: lsr [[LO_FOR_LO:x[0-9]+]], x0, x2 54 ; CHECK: orr [[LO_NORMAL:x[0-9]+]], [[LO_FOR_LO]], [[HI_FOR_LO]] 55 ; CHECK: sub [[EXTRA_SHIFT:x[0-9]+]], x2, #64 56 ; CHECK: lsr [[LO_BIG_SHIFT:x[0-9]+]], x1, [[EXTRA_SHIFT]] 57 ; CHECK: cmp [[EXTRA_SHIFT]], #0 58 ; CHECK: csel x0, [[LO_BIG_SHIFT]], [[LO_NORMAL]], ge 59 ; CHECK: lsr [[SMALLSHIFT_HI:x[0-9]+]], x1, x2 60 ; CHECK: csel x1, xzr, [[SMALLSHIFT_HI]], ge 61 ; CHECK: ret 62 63 %shr = lshr i128 %r, %s 64 ret i128 %shr 65 } 66
