r218994 - Add getOpenMPSimdDefaultAlignment for PowerPC

[Hal Finkel]

Author: hfinkel
Date: Fri Oct  3 12:45:20 2014
New Revision: 218994

URL: http://llvm.org/viewvc/llvm-project?rev=218994&view=rev
Log:
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.

Modified:
    cfe/trunk/lib/CodeGen/TargetInfo.cpp
    cfe/trunk/test/OpenMP/simd_metadata.c

Modified: cfe/trunk/lib/CodeGen/TargetInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/TargetInfo.cpp?rev=218994&r1=218993&r2=218994&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/TargetInfo.cpp (original)
+++ cfe/trunk/lib/CodeGen/TargetInfo.cpp Fri Oct  3 12:45:20 2014
@@ -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.
+  }
 };
 
 }

Modified: cfe/trunk/test/OpenMP/simd_metadata.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/OpenMP/simd_metadata.c?rev=218994&r1=218993&r2=218994&view=diff
==============================================================================
--- cfe/trunk/test/OpenMP/simd_metadata.c (original)
+++ cfe/trunk/test/OpenMP/simd_metadata.c Fri Oct  3 12:45:20 2014
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -fopenmp=libiomp5 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -fopenmp=libiomp5 -triple powerpc64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
 
 void h1(float *c, float *a, double b[], int size)
 {