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update sum.c to LLVM-3.6 #1

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update sum.c to LLVM-3.6 #1

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ef1d0ad
switch from JIT to MCJIT
thielema Aug 11, 2016
9768751
Also initialize AsmPrinter and AsmParser.
thielema Aug 11, 2016
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2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
CC=clang
CFLAGS=-g `llvm-config --cflags`
LD=clang++
LDFLAGS=`llvm-config --cxxflags --ldflags --libs core executionengine jit interpreter analysis native bitwriter --system-libs`
LDFLAGS=`llvm-config --cxxflags --ldflags --libs core executionengine mcjit interpreter analysis native bitwriter --system-libs`

all: sum

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19 changes: 10 additions & 9 deletions sum.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,8 +36,10 @@ int main(int argc, char const *argv[]) {

LLVMExecutionEngineRef engine;
error = NULL;
LLVMLinkInJIT();
LLVMLinkInMCJIT();
LLVMInitializeNativeTarget();
LLVMInitializeNativeAsmPrinter();
LLVMInitializeNativeAsmParser();
if (LLVMCreateExecutionEngineForModule(&engine, mod, &error) != 0) {
fprintf(stderr, "failed to create execution engine\n");
abort();
Expand All @@ -52,15 +54,14 @@ int main(int argc, char const *argv[]) {
fprintf(stderr, "usage: %s x y\n", argv[0]);
exit(EXIT_FAILURE);
}
long long x = strtoll(argv[1], NULL, 10);
long long y = strtoll(argv[2], NULL, 10);
int32_t x = strtoll(argv[1], NULL, 10);
int32_t y = strtoll(argv[2], NULL, 10);

LLVMGenericValueRef args[] = {
LLVMCreateGenericValueOfInt(LLVMInt32Type(), x, 0),
LLVMCreateGenericValueOfInt(LLVMInt32Type(), y, 0)
};
LLVMGenericValueRef res = LLVMRunFunction(engine, sum, 2, args);
printf("%d\n", (int)LLVMGenericValueToInt(res, 0));
{
int32_t (*funcPtr) (int32_t, int32_t)
= LLVMGetPointerToGlobal(engine, sum);
printf("%d\n", funcPtr(x,y));
}

// Write out bitcode to file
if (LLVMWriteBitcodeToFile(mod, "sum.bc") != 0) {
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