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* [Bug c/94735] New: MVE vector load/store pair getting removed with -O2.
@ 2020-04-23 17:22 sripar01 at gcc dot gnu.org
  2020-04-23 17:24 ` [Bug c/94735] " sripar01 at gcc dot gnu.org
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: sripar01 at gcc dot gnu.org @ 2020-04-23 17:22 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94735

            Bug ID: 94735
           Summary: MVE vector load/store pair getting removed with -O2.
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sripar01 at gcc dot gnu.org
  Target Milestone: ---

Created attachment 48362
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48362&action=edit
test case

$ arm-none-eabi-gcc -v
Using built-in specs.
COLLECT_GCC=arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/media/sripar01/2tb_work/Release/build-arm-none-eabi/install/libexec/gcc/arm-none-eabi/10.0.1/lto-wrapper
Target: arm-none-eabi
Configured with: /media/sripar01/2tb_work/Release/src/gcc/configure
--target=arm-none-eabi
--prefix=/media/sripar01/2tb_work/Release/build-arm-none-eabi/install//
--with-gmp=/media/sripar01/2tb_work/Release/build-arm-none-eabi/host-tools
--with-mpfr=/media/sripar01/2tb_work/Release/build-arm-none-eabi/host-tools
--with-mpc=/media/sripar01/2tb_work/Release/build-arm-none-eabi/host-tools
--with-isl=/media/sripar01/2tb_work/Release/build-arm-none-eabi/host-tools
--disable-shared --disable-nls --disable-threads --disable-tls
--enable-checking=yes --enable-languages=c --without-cloog --without-isl
--with-newlib --without-headers --with-multilib-list=rmprofile
--with-pkgversion=unknown
Thread model: single
Supported LTO compression algorithms: zlib
gcc version 10.0.1 20200423 (experimental) (unknown)

$ arm-none-eabi-gcc mve_vstore.i -S -O2 -march=armv8.1-m.main+mve
-mfloat-abi=hard

On compiling attached test case (mve_vstore.i) with -02 optimizes out a pair of
vector load/store statements.

^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-06-18 11:08 UTC | newest]

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2020-04-23 17:22 [Bug c/94735] New: MVE vector load/store pair getting removed with -O2 sripar01 at gcc dot gnu.org
2020-04-23 17:24 ` [Bug c/94735] " sripar01 at gcc dot gnu.org
2020-06-04 14:55 ` [Bug target/94735] " cvs-commit at gcc dot gnu.org
2020-06-16 13:54 ` cvs-commit at gcc dot gnu.org
2020-06-18 11:08 ` sripar01 at gcc dot gnu.org

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