asm2wasm i64 support (#723)

* support i64 intrinsics from fastcomp, adding --wasm-only flag

* refactor callImport logic in asm2wasm to avoid recomputing wasm types again

* legalize illegal i64 params in exports and imports

* do safe i64 binary ops depending on precision

* fix addVar, only assert on names if we are using a name

1 files changed, 2 insertions, 0 deletions

diff --git a/src/asmjs/asm_v_wasm.cpp b/src/asmjs/asm_v_wasm.cpp
index 648871100..2bf2b2bd3 100644
--- a/src/asmjs/asm_v_wasm.cpp
+++ b/src/asmjs/asm_v_wasm.cpp
@@ -25,6 +25,7 @@ WasmType asmToWasmType(AsmType asmType) {
     case ASM_INT: return WasmType::i32;
     case ASM_DOUBLE: return WasmType::f64;
     case ASM_FLOAT: return WasmType::f32;
+    case ASM_INT64: return WasmType::i64;
     case ASM_NONE: return WasmType::none;
     default: {}
   }
@@ -36,6 +37,7 @@ AsmType wasmToAsmType(WasmType type) {
     case WasmType::i32: return ASM_INT;
     case WasmType::f32: return ASM_FLOAT;
     case WasmType::f64: return ASM_DOUBLE;
+    case WasmType::i64: return ASM_INT64;
     case WasmType::none: return ASM_NONE;
     default: {}
   }