From 9563909d6c104906f4a8ad4f3be08a4241d781a6 Mon Sep 17 00:00:00 2001
From: TianlongLiang <111852609+TianlongLiang@users.noreply.github.com>
Date: Thu, 12 Dec 2024 20:33:46 +0800
Subject: [PATCH] set alignment 4 when loading multi return value (#3955)

set alignment 4 when loading multi return value for all call opcodes
---
 core/iwasm/compilation/aot_emit_function.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/iwasm/compilation/aot_emit_function.c b/core/iwasm/compilation/aot_emit_function.c
index 49b1ac1cb..d22c1d5dd 100644
--- a/core/iwasm/compilation/aot_emit_function.c
+++ b/core/iwasm/compilation/aot_emit_function.c
@@ -1832,6 +1832,7 @@ aot_compile_op_call(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                 aot_set_last_error("llvm build load failed.");
                 goto fail;
             }
+            LLVMSetAlignment(ext_ret, 4);
             PUSH(ext_ret, ext_ret_types[i]);
         }
     }
@@ -2068,6 +2069,7 @@ call_aot_call_indirect_func(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
             aot_set_last_error("llvm build load failed.");
             return false;
         }
+        LLVMSetAlignment(value_rets[i], 4);
         cell_num += wasm_value_type_cell_num_internal(wasm_ret_types[i],
                                                       comp_ctx->pointer_size);
     }
@@ -2699,6 +2701,7 @@ aot_compile_op_call_indirect(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                 aot_set_last_error("llvm build load failed.");
                 goto fail;
             }
+            LLVMSetAlignment(ext_ret, 4);
             LLVMAddIncoming(result_phis[i], &ext_ret, &block_curr, 1);
         }
     }
@@ -3130,6 +3133,7 @@ aot_compile_op_call_ref(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                 aot_set_last_error("llvm build load failed.");
                 goto fail;
             }
+            LLVMSetAlignment(ext_ret, 4);
             LLVMAddIncoming(result_phis[i], &ext_ret, &block_curr, 1);
         }
     }
@@ -3205,6 +3209,7 @@ aot_compile_op_call_ref(AOTCompContext *comp_ctx, AOTFuncContext *func_ctx,
                 aot_set_last_error("llvm build load failed.");
                 goto fail;
             }
+            LLVMSetAlignment(ext_ret, 4);
             LLVMAddIncoming(result_phis[i], &ext_ret, &block_curr, 1);
         }
     }