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On 03/06/2015 04:54 PM, Aldy Hernandez wrote:
But doesn't this still involve a MODIFY_EXPR, i.e. return retval = D.2349?If I understand you correct, no. gimplify_return_expr creates a new temporary and uses that instead of <retval>: else if (gimplify_ctxp->return_temp) result = gimplify_ctxp->return_temp; else { result = create_tmp_reg (TREE_TYPE (result_decl)); ... } ... ... /* Smash the lhs of the MODIFY_EXPR to the temporary we plan to use. Then gimplify the whole thing. */ if (result != result_decl) TREE_OPERAND (ret_expr, 0) = result;
Sounds like ret_expr is a MODIFY_EXPR. Jason
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