[PATCH] D142947: [hexagon] add a -mcabac flag

[Brian Cain via Phabricator via cfe-commits]

bcain created this revision.
bcain added a reviewer: kparzysz.
bcain added a project: clang.
Herald added a project: All.
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For v73 and later, clang users who wish to use the cabac instructions need
a way to add the 'cabac' target feature.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D142947

Files:
  clang/include/clang/Driver/Options.td
  clang/test/Driver/hexagon-toolchain-elf.c


Index: clang/test/Driver/hexagon-toolchain-elf.c
===================================================================
--- clang/test/Driver/hexagon-toolchain-elf.c
+++ clang/test/Driver/hexagon-toolchain-elf.c
@@ -581,6 +581,16 @@
 // RUN:        | FileCheck --check-prefix=CHECK371 %s
 // CHECK371-NOT: "+reserved-r19"
 
+// -----------------------------------------------------------------------------
+// mcabac
+// -----------------------------------------------------------------------------
+// RUN: %clang -### -target hexagon-unknown-elf -mcabac %s 2>&1 \
+// RUN:        | FileCheck --check-prefix=CHECK372 %s
+// CHECK372: "-target-feature" "+cabac"
+// RUN: %clang -### -target hexagon-unknown-elf %s 2>&1 \
+// RUN:        | FileCheck --check-prefix=CHECK373 %s
+// CHECK373-NOT: "+cabac"
+
 // -----------------------------------------------------------------------------
 // Misc Defaults
 // -----------------------------------------------------------------------------
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -4559,6 +4559,8 @@
   Flags<[CC1Option]>, HelpText<"Enable generation of new-value stores">;
 def mno_nvs : Flag<["-"], "mno-nvs">, Group<m_hexagon_Features_Group>,
   Flags<[CC1Option]>, HelpText<"Disable generation of new-value stores">;
+def mcabac: Flag<["-"], "mcabac">, Group<m_hexagon_Features_Group>,
+  HelpText<"Enable CABAC instructions">;
 
 // SPARC feature flags
 def mfpu : Flag<["-"], "mfpu">, Group<m_sparc_Features_Group>;


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