[PATCH] D68401: [Hexagon] Fix clang driver to parse -mcpu/-mvXX and -march properly.

[Sumanth Gundapaneni via Phabricator via cfe-commits]

sgundapa created this revision.
sgundapa added reviewers: bcain, bcahoon.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Before this patch if we pass "-mcpu=hexagonv65 -march=hexagon" in this order,
the driver fails to figure out the correct cpu version. This patch fixed this
issue.


Repository:
  rC Clang

https://reviews.llvm.org/D68401

Files:
  clang/lib/Driver/ToolChains/Hexagon.cpp
  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
@@ -121,6 +121,19 @@
 // CHECK028-NOT: "-ffp-contract=fast"
 // CHECK028: {{hexagon-link|ld}}
 
+// RUN: %clang -### -target hexagon-unknown-elf \
+// RUN:   -ccc-install-dir %S/Inputs/hexagon_tree/Tools/bin \
+// RUN:   -mcpu=hexagonv65 -march=hexagon\
+// RUN:   %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=CHECK029 %s
+// RUN: %clang -### -target hexagon-unknown-elf \
+// RUN:   -ccc-install-dir %S/Inputs/hexagon_tree/Tools/bin \
+// RUN:   -mv65 -march=hexagon\
+// RUN:   %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=CHECK029 %s
+// CHECK029: "-cc1" {{.*}} "-target-cpu" "hexagonv65"
+// CHECK029: hexagon-link{{.*}}/Inputs/hexagon_tree/Tools/bin/../target/hexagon/lib/v65/crt0
+
 // -----------------------------------------------------------------------------
 // Test Linker related args
 // -----------------------------------------------------------------------------
Index: clang/lib/Driver/ToolChains/Hexagon.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Hexagon.cpp
+++ clang/lib/Driver/ToolChains/Hexagon.cpp
@@ -574,7 +574,7 @@
 
 const StringRef HexagonToolChain::GetTargetCPUVersion(const ArgList &Args) {
   Arg *CpuArg = nullptr;
-  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ, options::OPT_march_EQ))
+  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ))
     CpuArg = A;
 
   StringRef CPU = CpuArg ? CpuArg->getValue() : GetDefaultCPU();


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D68401.223035.patch
Type: text/x-patch
Size: 1641 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/cfe-commits/attachments/20191003/41e9b4d7/attachment.bin>