llvm_sys_wrapper/
phi.rs

1extern crate llvm_sys;
2
3use self::llvm_sys::core::*;
4use self::llvm_sys::prelude::*;
5use cstring_manager::CStringManager;
6
7#[derive(Debug)]
8pub struct Phi {
9    llvm_phi: LLVMValueRef
10}
11
12impl Phi {
13    pub fn new(builder: LLVMBuilderRef, typ: LLVMTypeRef, name: &str) -> Phi {
14        let name_ptr = CStringManager::new_cstring_as_ptr(name);
15        let phi = unsafe { LLVMBuildPhi(builder, typ, name_ptr) };
16        Phi {
17            llvm_phi: phi
18        }
19    }
20
21    pub fn as_ref(&self) -> LLVMValueRef {
22        self.llvm_phi
23    }
24
25    #[inline]
26    pub fn add_incoming(&self, value: LLVMValueRef, block: LLVMBasicBlockRef){
27        let mut values = [value];
28        let mut blocks = [block];
29        self.add_incomings(&mut values, &mut blocks);
30    }
31
32    #[inline]
33    pub fn add_incomings(&self, values: &mut [LLVMValueRef], blocks: &mut [LLVMBasicBlockRef]){
34        let count = values.len();
35        if count != blocks.len() {
36            panic!("values count not equal blocks count.");
37        }
38        unsafe {
39            LLVMAddIncoming(self.llvm_phi, values.as_mut_ptr(), blocks.as_mut_ptr(), count as u32)
40        }
41    }
42
43    #[inline]
44    pub fn incoming_count(&self) -> u32 {
45        unsafe { LLVMCountIncoming(self.llvm_phi) }
46    }
47
48    #[inline]
49    pub fn get_incoming(&self, index: u32) -> (LLVMValueRef, LLVMBasicBlockRef) {
50        let value = unsafe { LLVMGetIncomingValue(self.llvm_phi, index) };
51        let block = unsafe { LLVMGetIncomingBlock(self.llvm_phi, index) };
52        (value, block)
53    }
54}
llvm_sys_wrapper/phi.rs

llvm_sys_wrapper/
phi.rs
