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Teach rustc about phi nodes, block relationships. Translate if- and block-expressions.

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This commit is contained in:
Graydon Hoare
2010-10-04 15:55:12 -07:00
parent a87e81b929
commit 44e4b2d63a
5 changed files with 325 additions and 113 deletions
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10
src/comp/lib/llvm.rs
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@@ -1006,8 +1006,14 @@ obj builder(BuilderRef B) {
/* Miscellaneous instructions */
fn Phi(TypeRef Ty) -> ValueRef {
ret llvm.LLVMBuildPhi(B, Ty, _str.buf(""));
fn Phi(TypeRef Ty, vec[ValueRef] vals, vec[BasicBlockRef] bbs) -> ValueRef {
auto phi = llvm.LLVMBuildPhi(B, Ty, _str.buf(""));
check (_vec.len[ValueRef](vals) == _vec.len[BasicBlockRef](bbs));
llvm.LLVMAddIncoming(phi,
_vec.buf[ValueRef](vals),
_vec.buf[BasicBlockRef](bbs),
_vec.len[ValueRef](vals));
ret phi;
}
fn Call(ValueRef Fn, vec[ValueRef] Args) -> ValueRef {