Add getOpenMPSimdDefaultAlignment for PowerPC

When the aligned clause of an OpenMP simd pragma is not provided with an
explicit alignment, a target-dependent default must be used. This adds such a
default of PPC targets.

This will become slightly more complicated when BG/Q support is added (because
then it will depend on the type). For now, 16 is a correct value for all
systems, and covers Altivec and VSX vectors.

llvm-svn: 218994

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/TargetInfo.cpp b/clang/lib/CodeGen/TargetInfo.cpp
index 49c6626cf2e..f78c2d04073 100644
--- a/clang/lib/CodeGen/TargetInfo.cpp
+++ b/clang/lib/CodeGen/TargetInfo.cpp
@@ -2974,6 +2974,10 @@ public:
 
   bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
                                llvm::Value *Address) const override;
+
+  unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
+    return 16; // Natural alignment for Altivec vectors.
+  }
 };
 
 }
@@ -3090,6 +3094,10 @@ public:
 
   bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
                                llvm::Value *Address) const override;
+
+  unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
+    return 16; // Natural alignment for Altivec and VSX vectors.
+  }
 };
 
 class PPC64TargetCodeGenInfo : public DefaultTargetCodeGenInfo {
@@ -3103,6 +3111,10 @@ public:
 
   bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
                                llvm::Value *Address) const override;
+
+  unsigned getOpenMPSimdDefaultAlignment(QualType) const override {
+    return 16; // Natural alignment for Altivec vectors.
+  }
 };
 
 }