zig

commit 1691074b4b1f080b3a1f7ca7dc7426c6ef4c242a (tree)
parent 7e11ef79d67d000675e90ddf93fdb78d71cc695d
Author: Andrew Kelley <superjoe30@gmail.com>
Date:   Thu, 27 Apr 2017 18:40:17 -0400

add no-elim-base-pointer to __zig_fail function

fixes missing frame for unwrapping an error

closes #345

Diffstat:
M
README.md
 | 
2
+-
M
src/codegen.cpp
 | 
5
+++++

2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/README.md b/README.md
@@ -75,7 +75,7 @@ the Zig compiler itself:
 #### Library Dependencies
 
 These libraries must be installed on your system, with the development files
-available. The Zig compiler dynamically links against them.
+available. The Zig compiler links against them.
 
  * LLVM, Clang, and LLD libraries == 4.x
 
diff --git a/src/codegen.cpp b/src/codegen.cpp
@@ -720,6 +720,11 @@ static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
     addLLVMFnAttr(fn_val, "cold");
     LLVMSetLinkage(fn_val, LLVMInternalLinkage);
     LLVMSetFunctionCallConv(fn_val, LLVMFastCallConv);
+    addLLVMFnAttr(fn_val, "nounwind");
+    if (!g->is_release_build) {
+        ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim", "true");
+        ZigLLVMAddFunctionAttr(fn_val, "no-frame-pointer-elim-non-leaf", nullptr);
+    }
 
     LLVMBasicBlockRef entry_block = LLVMAppendBasicBlock(fn_val, "Entry");
     LLVMBasicBlockRef prev_block = LLVMGetInsertBlock(g->builder);