src/gallium/drivers/llvmpipe/lp_test_printf.c

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   3  * Copyright 2010 VMware, Inc.
   4  * All Rights Reserved.
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   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
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  13  *
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  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
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  26  **************************************************************************/
  27
  28
  29 #include <stdlib.h>
  30 #include <stdio.h>
  31
  32 #include "gallivm/lp_bld.h"
  33 #include "gallivm/lp_bld_printf.h"
  34
  35 #include <llvm-c/Analysis.h>
  36 #include <llvm-c/ExecutionEngine.h>
  37 #include <llvm-c/Target.h>
  38 #include <llvm-c/Transforms/Scalar.h>
  39
  40 #include "lp_test.h"
  41
  42
  43 struct printf_test_case {
  44    int foo;
  45 };
  46
  47 void
  48 write_tsv_header(FILE *fp)
  49 {
  50    fprintf(fp,
  51            "result\t"
  52            "format\n");
  53
  54    fflush(fp);
  55 }
  56
  57
  58
  59 typedef void (*test_printf_t)(int i);
  60
  61 /** cast wrapper */
  62 static test_printf_t
  63 voidptr_to_test_printf_t(void *p)
  64 {
  65    union {
  66       void *v;
  67       test_printf_t f;
  68    } u;
  69    u.v = p;
  70    return u.f;
  71 }
  72
  73
  74 static LLVMValueRef
  75 add_printf_test(LLVMModuleRef module)
  76 {
  77    LLVMTypeRef args[1] = { LLVMIntType(32) };
  78    LLVMValueRef func = LLVMAddFunction(module, "test_printf", LLVMFunctionType(LLVMVoidType(), args, 1, 0));
  79    LLVMBuilderRef builder = LLVMCreateBuilder();
  80    LLVMBasicBlockRef block = LLVMAppendBasicBlock(func, "entry");
  81
  82    LLVMSetFunctionCallConv(func, LLVMCCallConv);
  83
  84    LLVMPositionBuilderAtEnd(builder, block);
  85    lp_build_printf(builder, "hello, world\n");
  86    lp_build_printf(builder, "print 5 6: %d %d\n", LLVMConstInt(LLVMInt32Type(), 5, 0),
  87                                 LLVMConstInt(LLVMInt32Type(), 6, 0));
  88    LLVMBuildRetVoid(builder);
  89    LLVMDisposeBuilder(builder);
  90    return func;
  91 }
  92
  93
  94 PIPE_ALIGN_STACK
  95 static boolean
  96 test_printf(unsigned verbose, FILE *fp, const struct printf_test_case *testcase)
  97 {
  98    LLVMModuleRef module = NULL;
  99    LLVMValueRef test = NULL;
 100    LLVMExecutionEngineRef engine = NULL;
 101    LLVMModuleProviderRef provider = NULL;
 102    LLVMPassManagerRef pass = NULL;
 103    char *error = NULL;
 104    test_printf_t test_printf;
 105    float unpacked[4];
 106    unsigned packed;
 107    boolean success = TRUE;
 108    void *code;
 109
 110    module = LLVMModuleCreateWithName("test");
 111
 112    test = add_printf_test(module);
 113
 114    if(LLVMVerifyModule(module, LLVMPrintMessageAction, &error)) {
 115       LLVMDumpModule(module);
 116       abort();
 117    }
 118    LLVMDisposeMessage(error);
 119
 120    provider = LLVMCreateModuleProviderForExistingModule(module);
 121    if (LLVMCreateJITCompiler(&engine, provider, 1, &error)) {
 122       fprintf(stderr, "%s\n", error);
 123       LLVMDisposeMessage(error);
 124       abort();
 125    }
 126
 127 #if 0
 128    pass = LLVMCreatePassManager();
 129    LLVMAddTargetData(LLVMGetExecutionEngineTargetData(engine), pass);
 130    /* These are the passes currently listed in llvm-c/Transforms/Scalar.h,
 131     * but there are more on SVN. */
 132    LLVMAddConstantPropagationPass(pass);
 133    LLVMAddInstructionCombiningPass(pass);
 134    LLVMAddPromoteMemoryToRegisterPass(pass);
 135    LLVMAddGVNPass(pass);
 136    LLVMAddCFGSimplificationPass(pass);
 137    LLVMRunPassManager(pass, module);
 138 #else
 139    (void)pass;
 140 #endif
 141
 142    code = LLVMGetPointerToGlobal(engine, test);
 143    test_printf = voidptr_to_test_printf_t(code);
 144
 145    memset(unpacked, 0, sizeof unpacked);
 146    packed = 0;
 147
 148
 149    // LLVMDumpModule(module);
 150
 151    test_printf(0);
 152
 153    LLVMFreeMachineCodeForFunction(engine, test);
 154
 155    LLVMDisposeExecutionEngine(engine);
 156    if(pass)
 157       LLVMDisposePassManager(pass);
 158
 159    return success;
 160 }
 161
 162
 163 boolean
 164 test_all(unsigned verbose, FILE *fp)
 165 {
 166    boolean success = TRUE;
 167
 168    test_printf(verbose, fp, NULL);
 169
 170    return success;
 171 }
 172
 173
 174 boolean
 175 test_some(unsigned verbose, FILE *fp, unsigned long n)
 176 {
 177    return test_all(verbose, fp);
 178 }