On Fri, 28 Feb 2020 at 17:39, Vladimir Makarov <vmaka...@redhat.com> wrote: > > The following patch is dealing with arm failures after submitting > original patch for PR93564. > > Changing heuristics in the original patch resulted in different order > of allocation and creating gaps in hard reg file which were not enough > for pseudos requiring double regs. So RA started to use caller-saved > regs and additional store/load insns in function prologue. That is the > reason for some arm failures. > > The patch was successfully bootstrapped and benchmarked on x86-64. > On x86-64 SPEC2000 the patch generates a bit smaller and faster in > average code. >
Hi, This is causing another set of regressions on arm. For instance on arm-linux-gnueabihf --with-cpu cortex-a9 --with-fpu neon-fp16: FAIL: gcc.target/arm/armv8_2-fp16-move-1.c scan-assembler-not vmov\\.f16 FAIL: gcc.target/arm/fp16-aapcs-1.c scan-assembler vmov\\.f32\\ts1, s0 FAIL: gcc.target/arm/fp16-aapcs-3.c scan-assembler vmov\\.f32\\ts1, s0 FAIL: gcc.target/arm/fuse-caller-save.c scan-assembler-times mov\tr3, r0 1 FAIL: gcc.target/arm/unaligned-argument-2.c scan-assembler-times stm 1 Christophe
