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More work on codegen for conditionals 

Still doesn't compile
This commit is contained in:
greg 2017-01-10 10:30:08 -08:00
parent 8c4f7e141a
commit 825c271b17
1 changed files with 21 additions and 19 deletions
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40
src/compilation.rs
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@ -158,29 +158,31 @@ impl CodeGen for Expression {
let int_value: LLVMValueRef = LLVMWrap::ConstInt(int_type, native_val, false);
int_value
}
Conditional(ref test, ref then_block, ref else_block) => {
Conditional(ref test, ref then_expr, ref else_expr) => {
let condition_value = test.codegen(data);
let zero = LLVMWrap::ConstInt(int_type, 0, false);
let is_nonzero = LLVMWrap::BuildICmp(data.builder,
llvm_sys::LLVMIntPredicate::LLVMIntNE,
condition_value,
zero,
"is_nonzero");
let is_nonzero =
LLVMWrap::BuildICmp(data.builder,
llvm_sys::LLVMIntPredicate::LLVMIntNE,
condition_value,
zero,
"is_nonzero");
let func = 4;
let then_block = LLVMWrap::AppendBasicBlockInContext(data.context,
func,
"entry");
let else_block = LLVMWrap::AppendBasicBlockInContext(data.context,
func,
"entry");
let merge_block = LLVMWrap::AppendBasicBlockInContext(data.context,
func,
"entry");
//LLVMWrap::BuildCondBr(data.builder, is_nonzero, g
unimplemented!()
let then_block =
LLVMWrap::AppendBasicBlockInContext(data.context, func, "entry");
let else_block =
LLVMWrap::AppendBasicBlockInContext(data.context, func, "entry");
let merge_block =
LLVMWrap::AppendBasicBlockInContext(data.context, func, "entry");
LLVMWrap::BuildCondBr(data.builder, is_nonzero, then_block, else_block);
LLVMWrap::PositionBuilderAtEnd(data.builder, then_block);
let then_return = then_expr.codegen(data);
LLVMWrap::BuildBr(data.builder, merge_block);
let else_return = else_expr.codegen(data);
LLVMWrap::BuildBr(data.builder, merge_block);
LLVMWrap::PositionBuilderAtEnd(data.builder, else_block);
zero
}
_ => unimplemented!(),
}