add debug safety for left shifting

See #46

1 files changed, 13 insertions, 2 deletions

diff --git a/src/zig_llvm.cpp b/src/zig_llvm.cpp
index 4ef11f4ca2..bf59763cb2 100644
--- a/src/zig_llvm.cpp
+++ b/src/zig_llvm.cpp
@@ -661,14 +661,25 @@ static AtomicOrdering mapFromLLVMOrdering(LLVMAtomicOrdering Ordering) {
 
 LLVMValueRef ZigLLVMBuildCmpXchg(LLVMBuilderRef builder, LLVMValueRef ptr, LLVMValueRef cmp,
         LLVMValueRef new_val, LLVMAtomicOrdering success_ordering,
-        LLVMAtomicOrdering failure_ordering,
-        const char *name)
+        LLVMAtomicOrdering failure_ordering)
 {
     return wrap(unwrap(builder)->CreateAtomicCmpXchg(unwrap(ptr), unwrap(cmp), unwrap(new_val),
                 mapFromLLVMOrdering(success_ordering), mapFromLLVMOrdering(failure_ordering),
                 CrossThread));
 }
 
+LLVMValueRef ZigLLVMBuildNSWShl(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMValueRef RHS,
+        const char *name)
+{
+    return wrap(unwrap(builder)->CreateShl(unwrap(LHS), unwrap(RHS), name, false, true));
+}
+
+LLVMValueRef ZigLLVMBuildNUWShl(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMValueRef RHS,
+        const char *name)
+{
+    return wrap(unwrap(builder)->CreateShl(unwrap(LHS), unwrap(RHS), name, false, true));
+}
+
 
 //------------------------------------