On 19/04/16 03:54, Vladimir N Makarov wrote:
The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70689
The patch was successfully tested and bootstrapped on x86/x86-64.
Committed to the trunk as rev. 235184.
This 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
