Attachment 47753 Details for Bug 40838 – additional aligning on demand <10.0

[patch] additional aligning on demand <10.0

sse-32-align-9.2.patch (text/plain), 1.33 KB, created by Dzianis Kahanovich on 2020-01-31 15:03:31 UTC

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Creator: Dzianis Kahanovich

Created: 2020-01-31 15:03:31 UTC

Size: 1.33 KB

patch

obsolete

>--- a/gcc/config/i386/i386.c	2019-08-01 09:29:22.000000000 +0300
>+++ b/gcc/config/i386/i386.c	2020-01-31 15:40:01.931932349 +0300
>@@ -4382,6 +4382,25 @@ ix86_option_override_internal (bool main
>   if (!opts_set->x_ix86_force_align_arg_pointer)
>     opts->x_ix86_force_align_arg_pointer = STACK_REALIGN_DEFAULT;
> 
>+  /* 32-bit SSE need more align */
>+  if (!opts->x_ix86_force_align_arg_pointer
>+      && !TARGET_64BIT_P(opts) && TARGET_SSE_P(opts) && !TARGET_SSE4A_P(opts)
>+      && (opts->x_flag_vect_cost_model != VECT_COST_MODEL_CHEAP
>+      || opts->x_flag_simd_cost_model != VECT_COST_MODEL_CHEAP))
>+    {
>+      if (opts_set->x_ix86_force_align_arg_pointer)
>+	{
>+	  if (!opts_set->x_flag_vect_cost_model)
>+	      opts_set->x_flag_vect_cost_model = VECT_COST_MODEL_CHEAP
>+	  if (!opts_set->x_flag_simd_cost_model)
>+	      opts_set->x_flag_vect_cost_model = VECT_COST_MODEL_CHEAP
>+	}
>+#if ENABLE_STACKREALIGN_ABI_VIOLATION
>+	else
>+	  opts->x_ix86_force_align_arg_pointer = 1;
>+#endif
>+    }
>+
>   ix86_default_incoming_stack_boundary = PREFERRED_STACK_BOUNDARY;
> 
>   /* Validate -mincoming-stack-boundary= value or default it to
>--- a/gcc/config/i386/t-i386	2019-01-14 13:47:09.000000000 +0300
>+++ b/gcc/config/i386/t-i386	2020-01-31 15:41:32.300737121 +0300
>@@ -18,1 +18,2 @@
> # <http://www.gnu.org/licenses/>.
>+
>+TARGET_LIBGCC2_CFLAGS += -mno-stackrealign

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