diff options
Diffstat (limited to 'src/llvm_backend_stmt.cpp')
| -rw-r--r-- | src/llvm_backend_stmt.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/llvm_backend_stmt.cpp b/src/llvm_backend_stmt.cpp index 916c0433e..2afb5300b 100644 --- a/src/llvm_backend_stmt.cpp +++ b/src/llvm_backend_stmt.cpp @@ -1652,13 +1652,16 @@ void lb_build_if_stmt(lbProcedure *p, Ast *node) { } lbValue cond = lb_build_cond(p, is->cond, then, else_); + // Note `cond.value` only set for non-and/or conditions and const negs so that the `LLVMIsConstant()` + // and `LLVMConstIntGetZExtValue()` calls below will be valid and `LLVMInstructionEraseFromParent()` + // will target the correct (& only) branch statement if (is->label != nullptr) { lbTargetList *tl = lb_push_target_list(p, is->label, done, nullptr, nullptr); tl->is_block = true; } - if (LLVMIsConstant(cond.value)) { + if (cond.value && LLVMIsConstant(cond.value)) { // NOTE(bill): Do a compile time short circuit for when the condition is constantly known. // This done manually rather than relying on the SSA passes because sometimes the SSA passes // miss some even if they are constantly known, especially with few optimization passes. |