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Clean up the rst for the debug info tutorial

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223682 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2014-12-08 18:48:08 +00:00
parent 7fd7effa37
commit abe81e4794
1 changed files with 52 additions and 52 deletions
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104
docs/tutorial/LangImpl8.rst
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@ -75,8 +75,8 @@ statement be our "main":
.. code-block:: udiff .. code-block:: udiff
- PrototypeAST *Proto = new PrototypeAST("", std::vector<std::string>()); - PrototypeAST *Proto = new PrototypeAST("", std::vector<std::string>());
+ PrototypeAST *Proto = new PrototypeAST("main", std::vector<std::string>()); + PrototypeAST *Proto = new PrototypeAST("main", std::vector<std::string>());
just with the simple change of giving it a name. just with the simple change of giving it a name.
@ -84,20 +84,20 @@ Then we're going to remove the command line code wherever it exists:
.. code-block:: udiff .. code-block:: udiff
@@ -1129,7 +1129,6 @@ static void HandleTopLevelExpression() { @@ -1129,7 +1129,6 @@ static void HandleTopLevelExpression() {
/// top ::= definition | external | expression | ';' /// top ::= definition | external | expression | ';'
static void MainLoop() { static void MainLoop() {
while (1) { while (1) {
- fprintf(stderr, "ready> "); - fprintf(stderr, "ready> ");
switch (CurTok) { switch (CurTok) {
case tok_eof: case tok_eof:
return; return;
@@ -1184,7 +1183,6 @@ int main() { @@ -1184,7 +1183,6 @@ int main() {
BinopPrecedence['*'] = 40; // highest. BinopPrecedence['*'] = 40; // highest.
// Prime the first token. // Prime the first token.
- fprintf(stderr, "ready> "); - fprintf(stderr, "ready> ");
getNextToken(); getNextToken();
Lastly we're going to disable all of the optimization passes and the JIT so Lastly we're going to disable all of the optimization passes and the JIT so
that the only thing that happens after we're done parsing and generating that the only thing that happens after we're done parsing and generating
@ -105,43 +105,43 @@ code is that the llvm IR goes to standard error:
.. code-block:: udiff .. code-block:: udiff
@@ -1108,17 +1108,8 @@ static void HandleExtern() { @@ -1108,17 +1108,8 @@ static void HandleExtern() {
static void HandleTopLevelExpression() { static void HandleTopLevelExpression() {
// Evaluate a top-level expression into an anonymous function. // Evaluate a top-level expression into an anonymous function.
if (FunctionAST *F = ParseTopLevelExpr()) { if (FunctionAST *F = ParseTopLevelExpr()) {
- if (Function *LF = F->Codegen()) { - if (Function *LF = F->Codegen()) {
- // We're just doing this to make sure it executes. - // We're just doing this to make sure it executes.
- TheExecutionEngine->finalizeObject(); - TheExecutionEngine->finalizeObject();
- // JIT the function, returning a function pointer. - // JIT the function, returning a function pointer.
- void *FPtr = TheExecutionEngine->getPointerToFunction(LF); - void *FPtr = TheExecutionEngine->getPointerToFunction(LF);
- -
- // Cast it to the right type (takes no arguments, returns a double) so we - // Cast it to the right type (takes no arguments, returns a double) so we
- // can call it as a native function. - // can call it as a native function.
- double (*FP)() = (double (*)())(intptr_t)FPtr; - double (*FP)() = (double (*)())(intptr_t)FPtr;
- // Ignore the return value for this. - // Ignore the return value for this.
- (void)FP; - (void)FP;
+ if (!F->Codegen()) { + if (!F->Codegen()) {
+ fprintf(stderr, "Error generating code for top level expr"); + fprintf(stderr, "Error generating code for top level expr");
} }
} else { } else {
// Skip token for error recovery. // Skip token for error recovery.
@@ -1439,11 +1459,11 @@ int main() { @@ -1439,11 +1459,11 @@ int main() {
// target lays out data structures. // target lays out data structures.
TheModule->setDataLayout(TheExecutionEngine->getDataLayout()); TheModule->setDataLayout(TheExecutionEngine->getDataLayout());
OurFPM.add(new DataLayoutPass()); OurFPM.add(new DataLayoutPass());
+#if 0 +#if 0
OurFPM.add(createBasicAliasAnalysisPass()); OurFPM.add(createBasicAliasAnalysisPass());
// Promote allocas to registers. // Promote allocas to registers.
OurFPM.add(createPromoteMemoryToRegisterPass()); OurFPM.add(createPromoteMemoryToRegisterPass());
@@ -1218,7 +1210,7 @@ int main() { @@ -1218,7 +1210,7 @@ int main() {
OurFPM.add(createGVNPass()); OurFPM.add(createGVNPass());
// Simplify the control flow graph (deleting unreachable blocks, etc). // Simplify the control flow graph (deleting unreachable blocks, etc).
OurFPM.add(createCFGSimplificationPass()); OurFPM.add(createCFGSimplificationPass());
- -
+ #endif + #endif
OurFPM.doInitialization(); OurFPM.doInitialization();
// Set the global so the code gen can use this. // Set the global so the code gen can use this.
This relatively small set of changes get us to the point that we can compile This relatively small set of changes get us to the point that we can compile
our piece of Kaleidoscope language down to an executable program via this our piece of Kaleidoscope language down to an executable program via this
@ -149,7 +149,7 @@ command line:
.. code-block:: bash .. code-block:: bash
Kaleidoscope-Ch8 < fib.ks | & clang -x ir - Kaleidoscope-Ch8 < fib.ks | & clang -x ir -
which gives an a.out/a.exe in the current working directory. which gives an a.out/a.exe in the current working directory.