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riscv-gcc-1
Commit 08a9e4e7 by Jan Hubicka Committed by Jan Hubicka
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i386.c (ix86_expand_set_or_movmem): Disable 512bit loops for targets that preffer 128bit. 

	* i386.c (ix86_expand_set_or_movmem): Disable 512bit loops for targets
	that preffer 128bit.

From-SVN: r253524
parent eb79a6b1
Showing with 8 additions and 0 deletions
gcc/ChangeLog
2017-10-08 Jan Hubicka <hubicka@ucw.cz>
* i386.c (ix86_expand_set_or_movmem): Disable 512bit loops for targets
that preffer 128bit.
2017-10-08 Jan Hubicka <hubicka@ucw.cz>
* i386.c (has_dispatch): Disable for Ryzen.
2017-10-08 Olivier Hainque <hainque@adacore.com>
gcc/config/i386/i386.c
......@@ -28947,6 +28947,9 @@ ix86_expand_set_or_movmem (rtx dst, rtx src, rtx count_exp, rtx val_exp,
&& optab_handler (mov_optab, wider_mode) != CODE_FOR_nothing)
move_mode = wider_mode;
if (TARGET_AVX128_OPTIMAL && GET_MODE_BITSIZE (move_mode) > 128)
move_mode = TImode;
/* Find the corresponding vector mode with the same size as MOVE_MODE.
MOVE_MODE is an integer mode at the moment (SI, DI, TI, etc.). */
if (GET_MODE_SIZE (move_mode) > GET_MODE_SIZE (word_mode))
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