[Bug rtl-optimization/67609] [5 Regression] Generates wrong code for SSE2 _mm_load_pd

Wed, 09 Dec 2015 05:49:58 -0800 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67609

--- Comment #39 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Author: jgreenhalgh
Date: Wed Dec  9 13:47:19 2015
New Revision: 231455

URL: https://gcc.gnu.org/viewcvs?rev=231455&root=gcc&view=rev
Log:
[Patch AArch64] Reinstate CANNOT_CHANGE_MODE_CLASS to fix pr67609

gcc/

        PR rtl-optimization/67609
        * config/aarch64/aarch64-protos.h
        (aarch64_cannot_change_mode_class): Bring back.
        * config/aarch64/aarch64.c
        (aarch64_cannot_change_mode_class): Likewise.
        * config/aarch64/aarch64.h (CANNOT_CHANGE_MODE_CLASS): Likewise.
        * config/aarch64/aarch64.md (aarch64_movdi_<mode>low): Use
        zero_extract rather than truncate.
        (aarch64_movdi_<mode>high): Likewise.

gcc/testsuite/

        PR rtl-optimization/67609
        * gcc.dg/torture/pr67609.c: New.



Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr67609.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64-protos.h
    trunk/gcc/config/aarch64/aarch64.c
    trunk/gcc/config/aarch64/aarch64.h
    trunk/gcc/config/aarch64/aarch64.md
    trunk/gcc/testsuite/ChangeLog

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