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IR: implement truncate builtin

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This commit is contained in:
Andrew Kelley
2016-12-11 15:31:07 -05:00
parent 433c17aeb1
commit 3429639e84
5 changed files with 136 additions and 62 deletions
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10
src/codegen.cpp
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@@ -1879,6 +1879,14 @@ static LLVMValueRef ir_render_div_exact(CodeGen *g, IrExecutable *executable, Ir
return gen_div(g, want_debug_safety, op1_val, op2_val, instruction->base.type_entry, true);
}
static LLVMValueRef ir_render_truncate(CodeGen *g, IrExecutable *executable, IrInstructionTruncate *instruction) {
assert(instruction->dest_type->type_entry->id == TypeTableEntryIdMetaType);
TypeTableEntry *dest_type = get_underlying_type(instruction->dest_type->static_value.data.x_type);
assert(dest_type->id == TypeTableEntryIdInt);
LLVMValueRef target_val = ir_llvm_value(g, instruction->target);
return LLVMBuildTrunc(g->builder, target_val, dest_type->type_ref, "");
}
static void set_debug_location(CodeGen *g, IrInstruction *instruction) {
AstNode *source_node = instruction->source_node;
Scope *scope = instruction->scope;
@@ -1974,6 +1982,8 @@ static LLVMValueRef ir_render_instruction(CodeGen *g, IrExecutable *executable,
return ir_render_fence(g, executable, (IrInstructionFence *)instruction);
case IrInstructionIdDivExact:
return ir_render_div_exact(g, executable, (IrInstructionDivExact *)instruction);
case IrInstructionIdTruncate:
return ir_render_truncate(g, executable, (IrInstructionTruncate *)instruction);
case IrInstructionIdSwitchVar:
case IrInstructionIdContainerInitList:
case IrInstructionIdStructInit: