Add a new x86(_64) arch variant "goldmont-without-xsaves"
Its target arch is goldmont, but without xsaves support.
This ensures efficient execution on a broad range of Intel/AMD CPUs used
in Chromebooks, including those lacking xsaves support.
(e.g. Kaby Lake, Gemini Lake, Alder Lake and AMD Zen series)
Bug: 314243939
Test: Build an image with TARGET_ARCH_VARIANT:=goldmont-without-xsaves
Change-Id: I9963cc3356394815f068fc998a9708bdb30c8266
diff --git a/rust/config/x86_device.go b/rust/config/x86_device.go
index 822f281..e7b575c 100644
--- a/rust/config/x86_device.go
+++ b/rust/config/x86_device.go
@@ -26,16 +26,17 @@
x86LinkFlags = []string{}
x86ArchVariantRustFlags = map[string][]string{
- "": []string{},
- "atom": []string{"-C target-cpu=atom"},
- "broadwell": []string{"-C target-cpu=broadwell"},
- "goldmont": []string{"-C target-cpu=goldmont"},
- "goldmont-plus": []string{"-C target-cpu=goldmont-plus"},
- "haswell": []string{"-C target-cpu=haswell"},
- "ivybridge": []string{"-C target-cpu=ivybridge"},
- "sandybridge": []string{"-C target-cpu=sandybridge"},
- "silvermont": []string{"-C target-cpu=silvermont"},
- "skylake": []string{"-C target-cpu=skylake"},
+ "": []string{},
+ "atom": []string{"-C target-cpu=atom"},
+ "broadwell": []string{"-C target-cpu=broadwell"},
+ "goldmont": []string{"-C target-cpu=goldmont"},
+ "goldmont-plus": []string{"-C target-cpu=goldmont-plus"},
+ "goldmont-without-xsaves": []string{"-C target-cpu=goldmont", "-C target-feature=-xsaves"},
+ "haswell": []string{"-C target-cpu=haswell"},
+ "ivybridge": []string{"-C target-cpu=ivybridge"},
+ "sandybridge": []string{"-C target-cpu=sandybridge"},
+ "silvermont": []string{"-C target-cpu=silvermont"},
+ "skylake": []string{"-C target-cpu=skylake"},
//TODO: Add target-cpu=stoneyridge when rustc supports it.
"stoneyridge": []string{""},
"tremont": []string{"-C target-cpu=tremont"},