Support -m[no-]gather to enable/disable vectorization for all gather instructions

gcc/ChangeLog:

	* config/i386/i386.opt: Add new option mgather.

diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt
index 098a9ca2073126b300f4595cd843edb04870b7dc..9381025b667d48b33c5da5681acffe5a9e2dc643 100644 (file)
--- a/gcc/config/i386/i386.opt
+++ b/gcc/config/i386/i386.opt
@@ -1194,3 +1194,7 @@ Emit GNU_PROPERTY_X86_ISA_1_NEEDED GNU property.
 mmwait
 Target Mask(ISA2_MWAIT) Var(ix86_isa_flags2) Save
 Support MWAIT and MONITOR built-in functions and code generation.
+
+mgather
+Target Alias(mtune-ctrl=, use_gather, ^use_gather)
+Enable vectorization for gather instruction.