From 8f3fe7e2f0a3ce1a5c45fd204b0105f3b501e641 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 29 Jul 2010 12:03:33 -0600 Subject: gallivm: added lp_build_assert() function to make assertions in LLVM code --- src/gallium/auxiliary/gallivm/lp_bld_assert.c | 101 ++++++++++++++++++++++++++ src/gallium/auxiliary/gallivm/lp_bld_assert.h | 41 +++++++++++ 2 files changed, 142 insertions(+) create mode 100644 src/gallium/auxiliary/gallivm/lp_bld_assert.c create mode 100644 src/gallium/auxiliary/gallivm/lp_bld_assert.h (limited to 'src/gallium/auxiliary/gallivm') diff --git a/src/gallium/auxiliary/gallivm/lp_bld_assert.c b/src/gallium/auxiliary/gallivm/lp_bld_assert.c new file mode 100644 index 00000000000..f2ebd868a8d --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_assert.c @@ -0,0 +1,101 @@ +/************************************************************************** + * + * 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 "util/u_debug.h" +#include "util/u_memory.h" +#include "lp_bld_assert.h" +#include "lp_bld_init.h" +#include "lp_bld_printf.h" + + +/** + * A call to lp_build_assert() will build a function call to this function. + */ +static void +lp_assert(int condition, const char *msg) +{ + if (!condition) { + debug_printf("LLVM assertion '%s' failed!\n", msg); + assert(condition); + } +} + + + +/** + * lp_build_assert. + * + * Build an assertion in LLVM IR by building a function call to the + * lp_assert() function above. + * + * \param condition should be an 'i1' or 'i32' value + * \param msg a string to print if the assertion fails. + */ +LLVMValueRef +lp_build_assert(LLVMBuilderRef builder, LLVMValueRef condition, + const char *msg) +{ + LLVMModuleRef module; + LLVMTypeRef arg_types[2]; + LLVMValueRef msg_string, assert_func, params[2], r; + + module = LLVMGetGlobalParent(LLVMGetBasicBlockParent( + LLVMGetInsertBlock(builder))); + + msg_string = lp_build_const_string_variable(module, msg, strlen(msg) + 1); + + arg_types[0] = LLVMInt32Type(); + arg_types[1] = LLVMPointerType(LLVMInt8Type(), 0); + + /* lookup the lp_assert function */ + assert_func = LLVMGetNamedFunction(module, "lp_assert"); + + /* Create the assertion function if not found */ + if (!assert_func) { + LLVMTypeRef func_type = + LLVMFunctionType(LLVMVoidType(), arg_types, 2, 0); + + assert_func = LLVMAddFunction(module, "lp_assert", func_type); + LLVMSetFunctionCallConv(assert_func, LLVMCCallConv); + LLVMSetLinkage(assert_func, LLVMExternalLinkage); + LLVMAddGlobalMapping(lp_build_engine, assert_func, + func_to_pointer((func_pointer)lp_assert)); + } + assert(assert_func); + + /* build function call param list */ + params[0] = LLVMBuildZExt(builder, condition, arg_types[0], ""); + params[1] = LLVMBuildBitCast(builder, msg_string, arg_types[1], ""); + + /* check arg types */ + assert(LLVMTypeOf(params[0]) == arg_types[0]); + assert(LLVMTypeOf(params[1]) == arg_types[1]); + + r = LLVMBuildCall(builder, assert_func, params, 2, ""); + + return r; +} diff --git a/src/gallium/auxiliary/gallivm/lp_bld_assert.h b/src/gallium/auxiliary/gallivm/lp_bld_assert.h new file mode 100644 index 00000000000..ddd879dc2c6 --- /dev/null +++ b/src/gallium/auxiliary/gallivm/lp_bld_assert.h @@ -0,0 +1,41 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +#ifndef LP_BLD_ASSERT_H +#define LP_BLD_ASSERT_H + + +#include "lp_bld.h" + + +LLVMValueRef +lp_build_assert(LLVMBuilderRef builder, LLVMValueRef condition, + const char *msg); + + +#endif + -- cgit v1.2.3