derek.holloway
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179 lines
5.9 KiB
YAML
179 lines
5.9 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s
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# Check that we can fold a G_ASHR/G_LSHR fed by a G_SHL into a G_SBFX/G_UBFX.
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---
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name: apply_ashr_shl_to_sbfx
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_ashr_shl_to_sbfx
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 11
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; CHECK-NEXT: [[SBFX:%[0-9]+]]:_(s32) = G_SBFX [[COPY]], [[C1]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[SBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 5
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%2:_(s32) = G_CONSTANT i32 16
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: apply_ashr_shl_to_sbfx_lower_bound
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_ashr_shl_to_sbfx_lower_bound
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
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; CHECK-NEXT: [[SBFX:%[0-9]+]]:_(s32) = G_SBFX [[COPY]], [[C]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[SBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 30
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%2:_(s32) = G_CONSTANT i32 31
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: apply_ashr_shl_to_sbfx_upper_bound
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_ashr_shl_to_sbfx_upper_bound
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 30
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; CHECK-NEXT: [[SBFX:%[0-9]+]]:_(s32) = G_SBFX [[COPY]], [[C1]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[SBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 1
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%2:_(s32) = G_CONSTANT i32 31
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: apply_lshr_shl_to_ubfx
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_lshr_shl_to_ubfx
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 11
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; CHECK-NEXT: [[UBFX:%[0-9]+]]:_(s32) = G_UBFX [[COPY]], [[C1]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[UBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 5
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%2:_(s32) = G_CONSTANT i32 16
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_LSHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: apply_lshr_shl_to_ubfx_lower_bound
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_lshr_shl_to_ubfx_lower_bound
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
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; CHECK-NEXT: [[UBFX:%[0-9]+]]:_(s32) = G_UBFX [[COPY]], [[C]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[UBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 30
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%2:_(s32) = G_CONSTANT i32 31
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_LSHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: apply_lshr_shl_to_ubfx_upper_bound
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: apply_lshr_shl_to_ubfx_upper_bound
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 30
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; CHECK-NEXT: [[UBFX:%[0-9]+]]:_(s32) = G_UBFX [[COPY]], [[C1]](s32), [[C]]
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; CHECK-NEXT: $w0 = COPY [[UBFX]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 1
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%2:_(s32) = G_CONSTANT i32 31
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_LSHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: dont_apply_pos_out_of_bounds
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: dont_apply_pos_out_of_bounds
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 5
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
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; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
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; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C1]](s32)
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; CHECK-NEXT: $w0 = COPY [[ASHR]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 5
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%2:_(s32) = G_CONSTANT i32 2
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: dont_apply_no_constant
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: dont_apply_no_constant
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s32) = COPY $w1
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
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; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[COPY1]](s32)
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; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]](s32)
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; CHECK-NEXT: $w0 = COPY [[ASHR]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = COPY $w1
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%2:_(s32) = G_CONSTANT i32 2
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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$w0 = COPY %4(s32)
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...
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---
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name: dont_apply_more_than_one_use
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legalized: true
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body: |
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bb.0.entry:
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; CHECK-LABEL: name: dont_apply_more_than_one_use
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; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
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; CHECK-NEXT: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 5
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; CHECK-NEXT: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
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; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[C]](s32)
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; CHECK-NEXT: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C1]](s32)
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; CHECK-NEXT: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[SHL]], [[ASHR]]
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; CHECK-NEXT: $w0 = COPY [[MUL]](s32)
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%0:_(s32) = COPY $w0
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%1:_(s32) = G_CONSTANT i32 5
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%2:_(s32) = G_CONSTANT i32 16
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%3:_(s32) = G_SHL %0, %1
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%4:_(s32) = G_ASHR %3, %2
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%5:_(s32) = G_MUL %3, %4
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$w0 = COPY %5(s32)
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...
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