derek.holloway
7502bf64a4
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255 lines
6.2 KiB
YAML
255 lines
6.2 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple=aarch64-- -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
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---
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name: condbr_of_not
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legalized: true
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regBankSelected: true
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liveins:
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- { reg: '$x0' }
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body: |
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; CHECK-LABEL: name: condbr_of_not
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $x0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK-NEXT: [[LDRBBui:%[0-9]+]]:gpr32 = LDRBBui [[COPY]], 0 :: (load (s8))
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; CHECK-NEXT: TBZW [[LDRBBui]], 0, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $x0
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%0:gpr(p0) = COPY $x0
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%8:gpr(i8) = G_LOAD %0(p0) :: (load (s8))
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%4:gpr(i32) = G_ANYEXT %8(i8)
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%5:gpr(i32) = G_CONSTANT i32 1
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%6:gpr(i32) = G_XOR %4, %5
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G_BRCOND %6, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: condbr_of_not_64
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legalized: true
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regBankSelected: true
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liveins:
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- { reg: '$x0' }
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body: |
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; CHECK-LABEL: name: condbr_of_not_64
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $x0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:gpr64sp = COPY $x0
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; CHECK-NEXT: [[LDRBBui:%[0-9]+]]:gpr32 = LDRBBui [[COPY]], 0 :: (load (s8))
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; CHECK-NEXT: TBZW [[LDRBBui]], 0, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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; TB(N)ZX has no encoding if the bit being tested is < 32, so we should get
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; TBZW here.
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $x0
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%0:gpr(p0) = COPY $x0
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%8:gpr(i8) = G_LOAD %0(p0) :: (load (s8))
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%4:gpr(i64) = G_ANYEXT %8(i8)
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%5:gpr(i64) = G_CONSTANT i64 1
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%6:gpr(i64) = G_XOR %4, %5
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%3:gpr(i32) = G_TRUNC %6(i64)
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G_BRCOND %3(i32), %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: condbr_of_and
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legalized: true
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regBankSelected: true
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body: |
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; CHECK-LABEL: name: condbr_of_and
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $w0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %lhs:gpr32 = COPY $w0
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; CHECK-NEXT: TBNZW %lhs, 0, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $w0
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%lhs:gpr(i32) = COPY $w0
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%rhs:gpr(i32) = G_CONSTANT i32 1
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%op:gpr(i32) = G_AND %lhs, %rhs
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G_BRCOND %op, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: condbr_of_and_no_cst
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legalized: true
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regBankSelected: true
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body: |
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; CHECK-LABEL: name: condbr_of_and_no_cst
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $w0, $w1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %lhs:gpr32 = COPY $w0
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; CHECK-NEXT: %rhs:gpr32 = COPY $w1
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; CHECK-NEXT: %op:gpr32 = ANDWrr %lhs, %rhs
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; CHECK-NEXT: TBNZW %op, 0, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $w0, $w1
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%lhs:gpr(i32) = COPY $w0
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%rhs:gpr(i32) = COPY $w1
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%op:gpr(i32) = G_AND %lhs, %rhs
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G_BRCOND %op, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: condbr_of_shl
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legalized: true
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regBankSelected: true
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body: |
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; CHECK-LABEL: name: condbr_of_shl
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $w0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %lhs:gpr32 = COPY $w0
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; CHECK-NEXT: %op:gpr32 = UBFMWri %lhs, 31, 30
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; CHECK-NEXT: TBNZW %op, 0, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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; We won't ever fold this, because
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; bit = 0
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; bit - constant < 0, which isn't valid for tbz/tbnz.
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $w0
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%lhs:gpr(i32) = COPY $w0
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%rhs:gpr(i32) = G_CONSTANT i32 1
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%op:gpr(i32) = G_SHL %lhs, %rhs
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G_BRCOND %op, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: condbr_of_ashr
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legalized: true
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regBankSelected: true
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body: |
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; CHECK-LABEL: name: condbr_of_ashr
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $w0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %lhs:gpr32 = COPY $w0
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; CHECK-NEXT: TBNZW %lhs, 1, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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; We can fold ashr, because we can have
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; (tbz (ashr x, c), 0) where 0 + c > # bits in x.
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $w0
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%lhs:gpr(i32) = COPY $w0
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%rhs:gpr(i32) = G_CONSTANT i32 1
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%op:gpr(i32) = G_ASHR %lhs, %rhs
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G_BRCOND %op, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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---
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name: tbnzx
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legalized: true
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regBankSelected: true
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body: |
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; CHECK-LABEL: name: tbnzx
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: liveins: $x0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: %lhs:gpr64 = COPY $x0
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; CHECK-NEXT: TBNZX %lhs, 63, %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: RET_ReallyLR
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: RET_ReallyLR
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $x0
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%lhs:gpr(i64) = COPY $x0
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%rhs:gpr(i64) = G_CONSTANT i64 8589934592
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%op:gpr(i64) = G_ASHR %lhs, %rhs
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%trunc:gpr(i32) = G_TRUNC %op(i64)
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G_BRCOND %trunc, %bb.3
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bb.2:
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RET_ReallyLR
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bb.3:
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RET_ReallyLR
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...
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