1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -mtriple aarch64 -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s
4 name: ashr_shl_to_sext_inreg
6 tracksRegLiveness: true
13 ; CHECK-LABEL: name: ashr_shl_to_sext_inreg
15 ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
16 ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32)
17 ; CHECK: [[SEXT_INREG:%[0-9]+]]:_(s16) = G_SEXT_INREG [[TRUNC]], 8
18 ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[SEXT_INREG]](s16)
19 ; CHECK: $w0 = COPY [[ANYEXT]](s32)
20 ; CHECK: RET_ReallyLR implicit $w0
22 %0:_(s16) = G_TRUNC %1(s32)
23 %2:_(s16) = G_CONSTANT i16 8
24 %3:_(s16) = G_SHL %0, %2(s16)
25 %4:_(s16) = exact G_ASHR %3, %2(s16)
26 %5:_(s32) = G_ANYEXT %4(s16)
28 RET_ReallyLR implicit $w0
32 name: different_shift_amts
34 tracksRegLiveness: true
41 ; CHECK-LABEL: name: different_shift_amts
43 ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
44 ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[COPY]](s32)
45 ; CHECK: [[C:%[0-9]+]]:_(s16) = G_CONSTANT i16 12
46 ; CHECK: [[C1:%[0-9]+]]:_(s16) = G_CONSTANT i16 8
47 ; CHECK: [[SHL:%[0-9]+]]:_(s16) = G_SHL [[TRUNC]], [[C]](s16)
48 ; CHECK: [[ASHR:%[0-9]+]]:_(s16) = exact G_ASHR [[SHL]], [[C1]](s16)
49 ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[ASHR]](s16)
50 ; CHECK: $w0 = COPY [[ANYEXT]](s32)
51 ; CHECK: RET_ReallyLR implicit $w0
53 %0:_(s16) = G_TRUNC %1(s32)
54 %2:_(s16) = G_CONSTANT i16 12
55 %4:_(s16) = G_CONSTANT i16 8
56 %3:_(s16) = G_SHL %0, %2(s16)
57 %5:_(s16) = exact G_ASHR %3, %4(s16)
58 %6:_(s32) = G_ANYEXT %5(s16)
60 RET_ReallyLR implicit $w0
64 name: ashr_shl_to_sext_inreg_vector
66 tracksRegLiveness: true
72 ; Currently don't support this for vectors just yet, this will need updating
74 ; CHECK-LABEL: name: ashr_shl_to_sext_inreg_vector
76 ; CHECK: [[COPY:%[0-9]+]]:_(<4 x s16>) = COPY $d0
77 ; CHECK: [[C:%[0-9]+]]:_(s16) = G_CONSTANT i16 8
78 ; CHECK: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x s16>) = G_BUILD_VECTOR [[C]](s16), [[C]](s16), [[C]](s16), [[C]](s16)
79 ; CHECK: [[SHL:%[0-9]+]]:_(<4 x s16>) = G_SHL [[COPY]], [[BUILD_VECTOR]](<4 x s16>)
80 ; CHECK: [[ASHR:%[0-9]+]]:_(<4 x s16>) = exact G_ASHR [[SHL]], [[BUILD_VECTOR]](<4 x s16>)
81 ; CHECK: $d0 = COPY [[ASHR]](<4 x s16>)
82 ; CHECK: RET_ReallyLR implicit $d0
83 %0:_(<4 x s16>) = COPY $d0
84 %2:_(s16) = G_CONSTANT i16 8
85 %1:_(<4 x s16>) = G_BUILD_VECTOR %2(s16), %2(s16), %2(s16), %2(s16)
86 %3:_(<4 x s16>) = G_SHL %0, %1(<4 x s16>)
87 %4:_(<4 x s16>) = exact G_ASHR %3, %1(<4 x s16>)
88 $d0 = COPY %4(<4 x s16>)
89 RET_ReallyLR implicit $d0