[PATCH] D43094: AMDGPU: Enable PIC by default for amdgcn

[Konstantin Zhuravlyov via Phabricator via cfe-commits]

kzhuravl created this revision.
kzhuravl added reviewers: nhaehnle, t-tye, timcorringham, tpr, tstellar.
Herald added subscribers: dstuttard, yaxunl, wdng.

https://reviews.llvm.org/D43094

Files:
  lib/Driver/ToolChains/CommonArgs.cpp
  test/Driver/amdgcn-toolchain-pic.cl


Index: test/Driver/amdgcn-toolchain-pic.cl
===================================================================
--- test/Driver/amdgcn-toolchain-pic.cl
+++ test/Driver/amdgcn-toolchain-pic.cl
@@ -0,0 +1,7 @@
+// RUN: %clang -### -target amdgcn-- -mcpu=gfx803 %s 2>&1 | FileCheck %s
+// RUN: %clang -### -target amdgcn-amd- -mcpu=gfx803 %s 2>&1 | FileCheck %s
+// RUN: %clang -### -target amdgcn-amd-amdhsa -mcpu=gfx803 %s 2>&1 | FileCheck %s
+// RUN: %clang -### -target amdgcn-amd-amdpal -mcpu=gfx803 %s 2>&1 | FileCheck %s
+// RUN: %clang -### -target amdgcn-amd-mesa3d -mcpu=gfx803 %s 2>&1 | FileCheck %s
+
+// CHECK: clang{{.*}} "-mrelocation-model" "pic" "-pic-level" "1"
Index: lib/Driver/ToolChains/CommonArgs.cpp
===================================================================
--- lib/Driver/ToolChains/CommonArgs.cpp
+++ lib/Driver/ToolChains/CommonArgs.cpp
@@ -864,6 +864,10 @@
     }
   }
 
+  // AMDGPU-specific defaults for PIC.
+  if (Triple.getArch() == llvm::Triple::amdgcn)
+    PIC = true;
+
   // The last argument relating to either PIC or PIE wins, and no
   // other argument is used. If the last argument is any flavor of the
   // '-fno-...' arguments, both PIC and PIE are disabled. Any PIE


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