llvmpipe: Unit test for sin/cos that compares against reference implementation.

Signed-off-by: José Fonseca <jfonseca@vmware.com>

1 files changed, 204 insertions, 0 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_test_sincos.c b/src/gallium/drivers/llvmpipe/lp_test_sincos.c
new file mode 100644
index 0000000000..883e15fbb6
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_test_sincos.c
@@ -0,0 +1,204 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "gallivm/lp_bld.h"
+#include "gallivm/lp_bld_printf.h"
+#include "gallivm/lp_bld_arit.h"
+
+#include <llvm-c/Analysis.h>
+#include <llvm-c/ExecutionEngine.h>
+#include <llvm-c/Target.h>
+#include <llvm-c/Transforms/Scalar.h>
+
+#include "lp_test.h"
+
+
+struct sincos_test_case {
+};
+
+
+void
+write_tsv_header(FILE *fp)
+{
+   fprintf(fp,
+           "result\t"
+           "format\n");
+
+   fflush(fp);
+}
+
+
+#ifdef PIPE_ARCH_SSE
+
+#define USE_SSE2
+#include "sse_mathfun.h"
+
+typedef __m128 (*test_sincos_t)(__m128);
+
+static LLVMValueRef
+add_sincos_test(LLVMModuleRef module, bool sin)
+{
+   LLVMTypeRef v4sf = LLVMVectorType(LLVMFloatType(), 4);
+   LLVMTypeRef args[1] = { v4sf };
+   LLVMValueRef func = LLVMAddFunction(module, "sincos", LLVMFunctionType(v4sf, args, 1, 0));
+   LLVMValueRef arg1 = LLVMGetParam(func, 0);
+   LLVMBuilderRef builder = LLVMCreateBuilder();
+   LLVMBasicBlockRef block = LLVMAppendBasicBlock(func, "entry");
+   LLVMValueRef ret;
+   struct lp_build_context bld;
+
+   bld.builder = builder;
+   bld.type.floating = 1;
+   bld.type.width = 32;
+   bld.type.length = 4;
+
+   LLVMSetFunctionCallConv(func, LLVMCCallConv);
+
+   LLVMPositionBuilderAtEnd(builder, block);
+   ret = sin ? lp_build_sin(&bld, arg1) : lp_build_cos(&bld, arg1);
+   LLVMBuildRet(builder, ret);
+   LLVMDisposeBuilder(builder);
+   return func;
+}
+
+static void
+printv(char* string, v4sf value)
+{
+   v4sf v = value;
+   uint32_t  *p = (uint32_t *) &v;
+   float *f = (float *)&v;
+   printf("%s: %f(%x) %f(%x) %f(%x) %f(%x)\n", string,
+           f[0], p[0], f[1], p[1], f[2], p[2], f[3], p[3]);
+}
+
+PIPE_ALIGN_STACK
+static boolean
+test_sincos(unsigned verbose, FILE *fp, const struct sincos_test_case *testcase)
+{
+   LLVMModuleRef module = NULL;
+   LLVMValueRef test_sin = NULL, test_cos = NULL;
+   LLVMExecutionEngineRef engine = NULL;
+   LLVMModuleProviderRef provider = NULL;
+   LLVMPassManagerRef pass = NULL;
+   char *error = NULL;
+   test_sincos_t sin_func;
+   test_sincos_t cos_func;
+   float unpacked[4];
+   unsigned packed;
+   boolean success = TRUE;
+
+   module = LLVMModuleCreateWithName("test");
+
+   test_sin = add_sincos_test(module, TRUE);
+   test_cos = add_sincos_test(module, FALSE);
+
+   if(LLVMVerifyModule(module, LLVMPrintMessageAction, &error)) {
+      printf("LLVMVerifyModule: %s\n", error);
+      LLVMDumpModule(module);
+      abort();
+   }
+   LLVMDisposeMessage(error);
+
+   provider = LLVMCreateModuleProviderForExistingModule(module);
+   if (LLVMCreateJITCompiler(&engine, provider, 1, &error)) {
+      fprintf(stderr, "%s\n", error);
+      LLVMDisposeMessage(error);
+      abort();
+   }
+
+#if 0
+   pass = LLVMCreatePassManager();
+   LLVMAddTargetData(LLVMGetExecutionEngineTargetData(engine), pass);
+   /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
+    * but there are more on SVN. */
+   LLVMAddConstantPropagationPass(pass);
+   LLVMAddInstructionCombiningPass(pass);
+   LLVMAddPromoteMemoryToRegisterPass(pass);
+   LLVMAddGVNPass(pass);
+   LLVMAddCFGSimplificationPass(pass);
+   LLVMRunPassManager(pass, module);
+#else
+   (void)pass;
+#endif
+
+   sin_func = (test_sincos_t)LLVMGetPointerToGlobal(engine, test_sin);
+   cos_func = (test_sincos_t)LLVMGetPointerToGlobal(engine, test_cos);
+
+   memset(unpacked, 0, sizeof unpacked);
+   packed = 0;
+
+
+   // LLVMDumpModule(module);
+   {
+      v4sf src = {3.14159/4.0, -3.14159/4.0, 1.0, -1.0};
+      printv("ref ",sin_ps(src));
+      printv("llvm", sin_func(src));
+      printv("ref ",cos_ps(src));
+      printv("llvm",cos_func(src));
+   }
+
+   LLVMFreeMachineCodeForFunction(engine, test_sin);
+   LLVMFreeMachineCodeForFunction(engine, test_cos);
+
+   LLVMDisposeExecutionEngine(engine);
+   if(pass)
+      LLVMDisposePassManager(pass);
+
+   return success;
+}
+
+#else /* !PIPE_ARCH_SSE */
+
+static boolean
+test_sincos(unsigned verbose, FILE *fp, const struct sincos_test_case *testcase)
+{
+   return TRUE;
+}
+
+#endif /* !PIPE_ARCH_SSE */
+
+
+boolean
+test_all(unsigned verbose, FILE *fp)
+{
+   bool success = TRUE;
+
+   test_sincos(verbose, fp, NULL);
+
+   return success;
+}
+
+
+boolean
+test_some(unsigned verbose, FILE *fp, unsigned long n)
+{
+   return test_all(verbose, fp);
+}