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171 lines
3.9 KiB
171 lines
3.9 KiB
# RUN: llc -mtriple arm-- -run-pass=legalizer %s -o - | FileCheck %s
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# RUN: llc -mtriple thumb-- -mattr=+v6t2 -run-pass=legalizer %s -o - | FileCheck %s
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--- |
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define void @test_brcond() { ret void }
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define void @test_phi_s32() { ret void }
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define void @test_phi_p0() { ret void }
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define void @test_phi_s8() { ret void }
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...
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---
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name: test_brcond
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# CHECK-LABEL: name: test_brcond
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legalized: false
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# CHECK: legalized: true
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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registers:
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- { id: 0, class: _ }
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- { id: 1, class: _ }
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- { id: 2, class: _ }
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body: |
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bb.0:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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liveins: $r0, $r1
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%0(s32) = COPY $r0
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%1(s32) = COPY $r1
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%2(s1) = G_ICMP intpred(sgt), %0(s32), %1
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G_BRCOND %2(s1), %bb.1
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; G_BRCOND with s1 is legal, so we should find it unchanged in the output
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; CHECK: G_BRCOND {{%[0-9]+}}(s1), %bb.1
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G_BR %bb.2
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bb.1:
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$r0 = COPY %1(s32)
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BX_RET 14, $noreg, implicit $r0
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bb.2:
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$r0 = COPY %0(s32)
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BX_RET 14, $noreg, implicit $r0
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...
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---
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name: test_phi_s32
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# CHECK-LABEL: name: test_phi_s32
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legalized: false
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# CHECK: legalized: true
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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registers:
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- { id: 0, class: _ }
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- { id: 1, class: _ }
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- { id: 2, class: _ }
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- { id: 3, class: _ }
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- { id: 4, class: _ }
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body: |
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bb.0:
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liveins: $r0, $r1, $r2
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%0(s32) = COPY $r0
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%1(s1) = G_TRUNC %0(s32)
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%2(s32) = COPY $r1
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%3(s32) = COPY $r2
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G_BRCOND %1(s1), %bb.1
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G_BR %bb.2
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bb.1:
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G_BR %bb.2
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bb.2:
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%4(s32) = G_PHI %2(s32), %bb.0, %3(s32), %bb.1
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; G_PHI with s32 is legal, so we should find it unchanged in the output
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; CHECK: G_PHI {{%[0-9]+}}(s32), %bb.0, {{%[0-9]+}}(s32), %bb.1
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$r0 = COPY %4(s32)
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BX_RET 14, $noreg, implicit $r0
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...
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---
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name: test_phi_p0
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# CHECK-LABEL: name: test_phi_p0
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legalized: false
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# CHECK: legalized: true
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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registers:
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- { id: 0, class: _ }
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- { id: 1, class: _ }
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- { id: 2, class: _ }
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- { id: 3, class: _ }
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- { id: 4, class: _ }
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body: |
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bb.0:
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liveins: $r0, $r1, $r2
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%0(s32) = COPY $r0
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%1(s1) = G_TRUNC %0(s32)
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%2(p0) = COPY $r1
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%3(p0) = COPY $r2
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G_BRCOND %1(s1), %bb.1
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G_BR %bb.2
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bb.1:
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G_BR %bb.2
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bb.2:
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%4(p0) = G_PHI %2(p0), %bb.0, %3(p0), %bb.1
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; G_PHI with p0 is legal, so we should find it unchanged in the output
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; CHECK: G_PHI {{%[0-9]+}}(p0), %bb.0, {{%[0-9]+}}(p0), %bb.1
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$r0 = COPY %4(p0)
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BX_RET 14, $noreg, implicit $r0
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...
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---
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name: test_phi_s8
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# CHECK-LABEL: name: test_phi_s8
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legalized: false
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# CHECK: legalized: true
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regBankSelected: false
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selected: false
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tracksRegLiveness: true
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registers:
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- { id: 0, class: _ }
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- { id: 1, class: _ }
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- { id: 2, class: _ }
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- { id: 3, class: _ }
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- { id: 4, class: _ }
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- { id: 5, class: _ }
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- { id: 6, class: _ }
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- { id: 7, class: _ }
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body: |
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bb.0:
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liveins: $r0, $r1, $r2
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%0(s32) = COPY $r0
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%1(s1) = G_TRUNC %0(s32)
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%2(s32) = COPY $r1
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%3(s8) = G_TRUNC %2(s32)
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; CHECK: [[R1:%[0-9]+]]:_(s32) = COPY $r1
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%4(s32) = COPY $r2
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%5(s8) = G_TRUNC %4(s32)
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; CHECK: [[R2:%[0-9]+]]:_(s32) = COPY $r2
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; CHECK: [[V1:%[0-9]+]]:_(s32) = COPY [[R1]]
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G_BRCOND %1(s1), %bb.1
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G_BR %bb.2
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bb.1:
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; CHECK: [[V2:%[0-9]+]]:_(s32) = COPY [[R2]]
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G_BR %bb.2
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bb.2:
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%6(s8) = G_PHI %3(s8), %bb.0, %5(s8), %bb.1
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; G_PHI with s8 should widen, and all the truncs and exts should be combined
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; away into a bunch of redundant copies
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; CHECK: [[V:%[0-9]+]]:_(s32) = G_PHI [[V1]](s32), %bb.0, [[V2]](s32), %bb.1
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%7(s32) = G_ANYEXT %6(s8)
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$r0 = COPY %7(s32)
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; CHECK: [[R:%[0-9]+]]:_(s32) = COPY [[V]]
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; CHECK: $r0 = COPY [[R]](s32)
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BX_RET 14, $noreg, implicit $r0
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...
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