From 1edd878e0e21579969b0d1bf0e5b2f13bcce3cde Mon Sep 17 00:00:00 2001 From: Sergey Shalnov Date: Wed, 22 Nov 2017 17:49:07 +0300 Subject: [PATCH 1/1] Fix behavior for -mprefer-vector-width= option --- gcc/config/i386/i386.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index 6eadc03..293445c 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -2681,7 +2681,8 @@ extern void debug_dispatch_window (int); /* Use 128-bit AVX instructions in the auto-vectorizer. */ #define TARGET_PREFER_AVX128 (prefer_vector_width_type == PVW_AVX128) /* Use 256-bit AVX instructions in the auto-vectorizer. */ -#define TARGET_PREFER_AVX256 (prefer_vector_width_type == PVW_AVX256) +#define TARGET_PREFER_AVX256 (TARGET_PREFER_AVX128 || \ + (prefer_vector_width_type == PVW_AVX256)) #define IX86_HLE_ACQUIRE (1 << 16) #define IX86_HLE_RELEASE (1 << 17) -- 1.8.3.1