https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70751
Bug ID: 70751
Summary: FAIL: gcc.target/arm/eliminate.c scan-assembler-times
r0,[\\t ]*sp 3 since r235184
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jiwang at gcc dot gnu.org
CC: vmakarov at redhat dot com
Target Milestone: ---
Target: arm*
r235184 caused the following regression on trunk
FAIL: gcc: gcc.target/arm/eliminate.c scan-assembler-times r0,[\\t ]*sp 3
configuration: --target=arm-none-eabi --enable-languages=c
compile option: -O2 -march=armv7-a
before:
===
foo:
str lr, [sp, #-4]!
sub sp, sp, #12
add r0, sp, #4
bl bar
add r0, sp, #4
bl bar
add r0, sp, #4
bl bar
add sp, sp, #12
ldr pc, [sp], #4
after:
===
foo:
str lr, [sp, #-4]!
sub sp, sp, #20
add r3, sp, #12
str r3, [sp, #4]
mov r0, r3
bl bar
add r3, sp, #12
str r3, [sp, #4]
mov r0, r3
bl bar
add r3, sp, #12
str r3, [sp, #4]
mov r0, r3
bl bar
add sp, sp, #20
ldr pc, [sp], #4
