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Add support for -march=sandybridge

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HHVM's been building with this (or equivalent predecessor patches); it
gets us a 20x speedup on real-world workloads, at the cost of slightly
worse compatibility.

This doesn't change the default, just makes it available as an explicit
choice.
This commit is contained in:
Fred Emmott 2020-07-10 10:32:30 -07:00
parent 28f4a700ac
commit 10feb68128
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Library/Homebrew/hardware.rb
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@ -14,6 +14,7 @@ module Hardware
@optimization_flags ||= { @optimization_flags ||= {
native: arch_flag("native"), native: arch_flag("native"),
nehalem: "-march=nehalem", nehalem: "-march=nehalem",
sandybridge: "-march=sandybridge",
core2: "-march=core2", core2: "-march=core2",
core: "-march=prescott", core: "-march=prescott",
arm_vortex_tempest: "", arm_vortex_tempest: "",