limit cpu features of skcms on bots we limit skia

Valgrind doesn't support half<->float x86 conversion instructions,
so we build those bots with SK_CPU_LIMIT_SSE41.  We now also need
to limit skcms on those same bots.

Easiest thing to do is build completely portable scalar code, using
the existing -DSKCMS_PORTABLE.  We can get fancier later if needed.

Change-Id: Icf14c72a220818be9df7b97bcf203e4412c3c6b7
Reviewed-on: https://skia-review.googlesource.com/118264
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>

3 files changed, 75 insertions, 0 deletions

diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41.json
new file mode 100644
index 0000000000..e9455576d1
--- /dev/null
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41.json
@@ -0,0 +1,70 @@
+[
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
+      "[CUSTOM_/_B_WORK]/skia/infra/bots/assets/clang_linux/VERSION",
+      "/path/to/tmp/"
+    ],
+    "infra_step": true,
+    "name": "Get clang_linux VERSION"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "[CUSTOM_/_B_WORK]/skia/bin/fetch-gn"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/skia",
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41"
+    },
+    "infra_step": true,
+    "name": "fetch-gn"
+  },
+  {
+    "cmd": [
+      "[CUSTOM_/_B_WORK]/skia/bin/gn",
+      "gen",
+      "[CUSTOM_/_B_WORK]/skia/out/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41/Debug",
+      "--args=cc=\"[START_DIR]/clang_linux/bin/clang\" cxx=\"[START_DIR]/clang_linux/bin/clang++\" extra_cflags=[\"-B[START_DIR]/clang_linux/bin\", \"-DDUMMY_clang_linux_version=42\", \"-O1\", \"-DSK_CPU_LIMIT_SSE41\", \"-DSKCMS_PORTABLE\"] extra_ldflags=[\"-B[START_DIR]/clang_linux/bin\", \"-fuse-ld=lld\"] target_cpu=\"x86_64\""
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/skia",
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41"
+    },
+    "name": "gn gen"
+  },
+  {
+    "cmd": [
+      "ninja",
+      "-k",
+      "0",
+      "-C",
+      "[CUSTOM_/_B_WORK]/skia/out/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41/Debug"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/skia",
+    "env": {
+      "BUILDTYPE": "Debug",
+      "CHROME_HEADLESS": "1",
+      "PATH": "<PATH>:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41"
+    },
+    "name": "ninja"
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]
\ No newline at end of file
diff --git a/infra/bots/recipe_modules/flavor/examples/full.py b/infra/bots/recipe_modules/flavor/examples/full.py
index 7cd98a686d..7a30fa0907 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.py
+++ b/infra/bots/recipe_modules/flavor/examples/full.py
@@ -64,6 +64,7 @@ TEST_BUILDERS = [
   'Build-Debian9-Clang-universal-devrel-Android_SKQP',
   'Build-Debian9-Clang-x86_64-Debug-Chromebook_GLES',
   'Build-Debian9-Clang-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE',
+  'Build-Debian9-Clang-x86_64-Debug-SK_CPU_LIMIT_SSE41',
   'Build-Debian9-Clang-x86_64-Release-Fast',
   'Build-Debian9-Clang-x86_64-Release-Mini',
   'Build-Debian9-Clang-x86_64-Release-NoDEPS',
diff --git a/infra/bots/recipe_modules/flavor/gn_flavor.py b/infra/bots/recipe_modules/flavor/gn_flavor.py
index 1ea7cfe831..86b8b7968d 100644
--- a/infra/bots/recipe_modules/flavor/gn_flavor.py
+++ b/infra/bots/recipe_modules/flavor/gn_flavor.py
@@ -83,6 +83,10 @@ class GNFlavorUtils(default_flavor.DefaultFlavorUtils):
 
     if len(extra_tokens) == 1 and extra_tokens[0].startswith('SK'):
       extra_cflags.append('-D' + extra_tokens[0])
+      # If we're limiting Skia at all, drop skcms to portable code.
+      if 'SK_CPU_LIMIT' in extra_tokens[0]:
+        extra_cflags.append('-DSKCMS_PORTABLE')
+
 
     if 'MSAN' in extra_tokens:
       extra_ldflags.append('-L' + clang_linux + '/msan')