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