derek.holloway
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58 lines
1.8 KiB
YAML
58 lines
1.8 KiB
YAML
# RUN: llc -march hexagon -run-pass livevars -run-pass twoaddressinstruction -verify-machineinstrs -o - %s | FileCheck %s
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# RUN: llc -march hexagon --passes='require<live-vars>,two-address-instruction' -verify-each -o - %s | FileCheck %s
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###############################################################################
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---
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name: test1
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $d0
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%0:doubleregs = COPY killed $d0
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%1:intregs = S2_lsr_i_r_acc %0.isub_lo, %0.isub_lo, 16
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...
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# Verify that both uses if %0.isub_lo are replaced here.
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# (we used to get %1:intregs = S2_lsr_i_r_acc %1, %1.isub_lo, 16)
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#
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# CHECK-LABEL: name: test1
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# CHECK: bb.0.entry:
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# CHECK: %0:doubleregs = COPY killed $d0
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# CHECK-NEXT: %1:intregs = COPY killed %0.isub_lo
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# CHECK-NEXT: %1:intregs = S2_lsr_i_r_acc %1, %1, 16
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###############################################################################
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---
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name: test2
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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liveins: $d0
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%0:doubleregs = COPY killed $d0
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%1:intregs = S2_lsr_i_r_acc %0.isub_lo, %0.isub_hi, 16
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...
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# Verify that the use of %0.isub_hi isn't replaced here.
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# (we used to get %1:intregs = S2_lsr_i_r_acc %1, %1.isub_hi, 16)
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#
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# We also used to get an incorrect "killed" for %0 in the second COPY.
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# So we verify that we do not get machine verifier complaints here.
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# An improvement could be to get a "killed" attribute on the last
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# use of %0.isub_hi, but we do not need it for the IR to be valid.
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#
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# CHECK-LABEL: name: test2
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# CHECK: bb.0.entry:
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# CHECK: %0:doubleregs = COPY killed $d0
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# CHECK-NEXT: %1:intregs = COPY %0.isub_lo
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# CHECK-NEXT: %1:intregs = S2_lsr_i_r_acc %1, %0.isub_hi, 16
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###############################################################################
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