You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.7 KiB
57 lines
1.7 KiB
# RUN: llc -march hexagon -run-pass livevars -run-pass twoaddressinstruction -verify-machineinstrs -o - %s | FileCheck %s
|
|
|
|
|
|
###############################################################################
|
|
|
|
---
|
|
name: test1
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $d0
|
|
|
|
%0:doubleregs = COPY killed $d0
|
|
%1:intregs = S2_lsr_i_r_acc %0.isub_lo, %0.isub_lo, 16
|
|
|
|
...
|
|
|
|
# Verify that both uses if %0.isub_lo are replaced here.
|
|
# (we used to get %1:intregs = S2_lsr_i_r_acc %1, %1.isub_lo, 16)
|
|
#
|
|
# CHECK-LABEL: name: test1
|
|
# CHECK: bb.0.entry:
|
|
# CHECK: %0:doubleregs = COPY killed $d0
|
|
# CHECK-NEXT: %1:intregs = COPY killed %0.isub_lo
|
|
# CHECK-NEXT: %1:intregs = S2_lsr_i_r_acc %1, %1, 16
|
|
|
|
|
|
###############################################################################
|
|
|
|
---
|
|
name: test2
|
|
tracksRegLiveness: true
|
|
body: |
|
|
bb.0.entry:
|
|
liveins: $d0
|
|
|
|
%0:doubleregs = COPY killed $d0
|
|
%1:intregs = S2_lsr_i_r_acc %0.isub_lo, %0.isub_hi, 16
|
|
|
|
...
|
|
|
|
# Verify that the use of %0.isub_hi isn't replaced here.
|
|
# (we used to get %1:intregs = S2_lsr_i_r_acc %1, %1.isub_hi, 16)
|
|
#
|
|
# We also used to get an incorrect "killed" for %0 in the second COPY.
|
|
# So we verify that we do not get machine verifier complaints here.
|
|
# An improvement could be to get a "killed" attribute on the last
|
|
# use of %0.isub_hi, but we do not need it for the IR to be valid.
|
|
#
|
|
# CHECK-LABEL: name: test2
|
|
# CHECK: bb.0.entry:
|
|
# CHECK: %0:doubleregs = COPY killed $d0
|
|
# CHECK-NEXT: %1:intregs = COPY %0.isub_lo
|
|
# CHECK-NEXT: %1:intregs = S2_lsr_i_r_acc %1, %0.isub_hi, 16
|
|
|
|
###############################################################################
|