Extend initial support for primitive types in PTX backend

- Allow i16, i32, i64, float, and double types, using the native .u16,
  .u32, .u64, .f32, and .f64 PTX types.
- Allow loading/storing of all primitive types.
- Allow primitive types to be passed as parameters.
- Allow selection of PTX Version and Shader Model as sub-target attributes.
- Merge integer/floating-point test cases for load/store.
- Use .u32 instead of .s32 to conform to output from NVidia nvcc compiler.

Patch by Justin Holewinski



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126824 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 24 insertions, 3 deletions

diff --git a/lib/Target/PTX/PTXSubtarget.cpp b/lib/Target/PTX/PTXSubtarget.cpp
index 00e2c882a5..18a93052c9 100644
--- a/lib/Target/PTX/PTXSubtarget.cpp
+++ b/lib/Target/PTX/PTXSubtarget.cpp
@@ -12,12 +12,33 @@
 //===----------------------------------------------------------------------===//
 
 #include "PTXSubtarget.h"
+#include "llvm/Support/ErrorHandling.h"
 
 using namespace llvm;
 
-PTXSubtarget::PTXSubtarget(const std::string &TT, const std::string &FS) {
-  std::string TARGET = "sm_20";
-  // TODO: call ParseSubtargetFeatures(FS, TARGET);
+PTXSubtarget::PTXSubtarget(const std::string &TT, const std::string &FS)
+  : PTXShaderModel(PTX_SM_1_0),
+    PTXVersion(PTX_VERSION_1_4) {
+  std::string TARGET = "generic";
+  ParseSubtargetFeatures(FS, TARGET);
+}
+
+std::string PTXSubtarget::getTargetString() const {
+  switch(PTXShaderModel) {
+    default: llvm_unreachable("Unknown shader model");
+    case PTX_SM_1_0: return "sm_10";
+    case PTX_SM_1_3: return "sm_13";
+    case PTX_SM_2_0: return "sm_20";
+  }
+}
+
+std::string PTXSubtarget::getPTXVersionString() const {
+  switch(PTXVersion) {
+    default: llvm_unreachable("Unknown PTX version");
+    case PTX_VERSION_1_4: return "1.4";
+    case PTX_VERSION_2_0: return "2.0";
+    case PTX_VERSION_2_1: return "2.1";
+  }
 }
 
 #include "PTXGenSubtarget.inc"