| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -mtriple aarch64-apple-ios -run-pass=aarch64-prelegalizer-combiner %s -o - -verify-machineinstrs | FileCheck %s |
| |
| # This test checks the optimization to remove the G_TRUNC if we can determine it's redundant. |
| --- |
| name: icmp_trunc_sextload |
| tracksRegLiveness: true |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: name: icmp_trunc_sextload |
| ; CHECK: liveins: $x0 |
| ; CHECK: %v:_(p0) = COPY $x0 |
| ; CHECK: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load 4) |
| ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0 |
| ; CHECK: %cmp:_(s1) = G_ICMP intpred(ne), %load(s64), [[C]] |
| ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1) |
| ; CHECK: $w0 = COPY [[ANYEXT]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %v:_(p0) = COPY $x0 |
| %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load 4) |
| %trunc:_(s32) = G_TRUNC %load(s64) |
| %zero:_(s32) = G_CONSTANT i32 0 |
| %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s32), %zero |
| %5:_(s32) = G_ANYEXT %cmp |
| $w0 = COPY %5(s32) |
| RET_ReallyLR implicit $w0 |
| ... |
| --- |
| name: icmp_trunc_sextload_eq |
| tracksRegLiveness: true |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: name: icmp_trunc_sextload_eq |
| ; CHECK: liveins: $x0 |
| ; CHECK: %v:_(p0) = COPY $x0 |
| ; CHECK: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load 4) |
| ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0 |
| ; CHECK: %cmp:_(s1) = G_ICMP intpred(eq), %load(s64), [[C]] |
| ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1) |
| ; CHECK: $w0 = COPY [[ANYEXT]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %v:_(p0) = COPY $x0 |
| %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load 4) |
| %trunc:_(s32) = G_TRUNC %load(s64) |
| %zero:_(s32) = G_CONSTANT i32 0 |
| %cmp:_(s1) = G_ICMP intpred(eq), %trunc(s32), %zero |
| %5:_(s32) = G_ANYEXT %cmp |
| $w0 = COPY %5(s32) |
| RET_ReallyLR implicit $w0 |
| ... |
| --- |
| name: icmp_trunc_sextload_wrongpred |
| tracksRegLiveness: true |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: name: icmp_trunc_sextload_wrongpred |
| ; CHECK: liveins: $x0 |
| ; CHECK: %v:_(p0) = COPY $x0 |
| ; CHECK: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load 4) |
| ; CHECK: %trunc:_(s32) = G_TRUNC %load(s64) |
| ; CHECK: %zero:_(s32) = G_CONSTANT i32 0 |
| ; CHECK: %cmp:_(s1) = G_ICMP intpred(slt), %trunc(s32), %zero |
| ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1) |
| ; CHECK: $w0 = COPY [[ANYEXT]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %v:_(p0) = COPY $x0 |
| %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load 4) |
| %trunc:_(s32) = G_TRUNC %load(s64) |
| %zero:_(s32) = G_CONSTANT i32 0 |
| %cmp:_(s1) = G_ICMP intpred(slt), %trunc(s32), %zero |
| %5:_(s32) = G_ANYEXT %cmp |
| $w0 = COPY %5(s32) |
| RET_ReallyLR implicit $w0 |
| ... |
| --- |
| name: icmp_trunc_sextload_extend_mismatch |
| tracksRegLiveness: true |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: name: icmp_trunc_sextload_extend_mismatch |
| ; CHECK: liveins: $x0 |
| ; CHECK: %v:_(p0) = COPY $x0 |
| ; CHECK: %load:_(s64) = G_SEXTLOAD %v(p0) :: (load 4) |
| ; CHECK: %trunc:_(s16) = G_TRUNC %load(s64) |
| ; CHECK: %zero:_(s16) = G_CONSTANT i16 0 |
| ; CHECK: %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s16), %zero |
| ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT %cmp(s1) |
| ; CHECK: $w0 = COPY [[ANYEXT]](s32) |
| ; CHECK: RET_ReallyLR implicit $w0 |
| %v:_(p0) = COPY $x0 |
| %load:_(s64) = G_SEXTLOAD %v:_(p0) :: (load 4) |
| %trunc:_(s16) = G_TRUNC %load(s64) |
| %zero:_(s16) = G_CONSTANT i16 0 |
| %cmp:_(s1) = G_ICMP intpred(ne), %trunc(s16), %zero |
| %5:_(s32) = G_ANYEXT %cmp |
| $w0 = COPY %5(s32) |
| RET_ReallyLR implicit $w0 |
| ... |
| |