Revert "make SkJumper stages normal Skia code"

This reverts commit 22e536e3a1a09405d1c0e6f071717a726d86e8d4.

Reason for revert: wrong include path :/

Original change's description:
> make SkJumper stages normal Skia code
> 
> Enough clients are using Clang now that we can say, use Clang to build
> if you want these software pipeline stages to go fast.
> 
> This lets us drop the offline build aspect of SkJumper stages, instead
> building as part of Skia using the SkOpts framework.
> 
> I think everything should work, except I've (temporarily) removed
> AVX-512 support.  I will put this back in a follow up.
> 
> I have had to drop Windows down to __vectorcall and our narrower
> stage calling convention that keeps the d-registers on the stack.
> I tried forcing sysv_abi, but that crashed Clang.  :/
> 
> Added a TODO to up the same narrower stage calling convention
> for lowp stages... we just *don't* today, for no good reason.
> 
> Change-Id: Iaaa792ffe4deab3508d2dc5d0008c163c24b3383
> Reviewed-on: https://skia-review.googlesource.com/110641
> Commit-Queue: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Herb Derby <herb@google.com>
> Reviewed-by: Florin Malita <fmalita@chromium.org>

TBR=mtklein@chromium.org,herb@google.com,fmalita@chromium.org

Change-Id: I2bdc709c80cdfa6b13ff24e024b3721bef887f46
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/112741
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>

1 files changed, 29 insertions, 15 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 2a534a5d6c..f2a69e8e7b 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -48,6 +48,10 @@ declare_args() {
   skia_compile_processors = false
   skia_lex = false
 
+  skia_jumper_clang = ""
+  skia_jumper_objdump = ""
+  skia_jumper_ccache = ""
+
   skia_skqp_enable_driver_correctness_workarounds = false
   skia_skqp_global_error_tolerance = 0
 }
@@ -310,20 +314,6 @@ opts("avx") {
   }
 }
 
-opts("hsw") {
-  enabled = is_x86
-  sources = skia_opts.hsw_sources
-  if (!is_clang && is_win) {
-    cflags = [ "/arch:AVX2" ]
-  } else {
-    cflags = [
-      "-mavx2",
-      "-mf16c",
-      "-mfma",
-    ]
-  }
-}
-
 # Any feature of Skia that requires third-party code should be optional and use this template.
 template("optional") {
   if (invoker.enabled) {
@@ -785,7 +775,6 @@ component("skia") {
     ":fontmgr_fuchsia",
     ":gpu",
     ":heif",
-    ":hsw",
     ":jpeg",
     ":none",
     ":pdf",
@@ -2112,3 +2101,28 @@ if (skia_enable_tools) {
     }
   }
 }
+
+if (skia_jumper_clang != "") {
+  action("regen_jumper") {
+    script = "src/jumper/build_stages.py"
+
+    inputs = [
+      "src/jumper/SkJumper_stages.cpp",
+      "src/jumper/SkJumper_stages_lowp.cpp",
+    ]
+
+    # GN insists its outputs should go somewhere underneath target_out_dir, so we trick it.
+    outputs = [
+      "$target_out_dir/" +
+          rebase_path("src/jumper/SkJumper_generated.S", target_out_dir),
+      "$target_out_dir/" +
+          rebase_path("src/jumper/SkJumper_generated_win.S", target_out_dir),
+    ]
+
+    args = [
+             skia_jumper_clang,
+             skia_jumper_objdump,
+             skia_jumper_ccache,
+           ] + rebase_path(inputs) + rebase_path(outputs)
+  }
+}