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authorRichard Biener <rguenther@suse.de>2021-05-11 13:23:45 +0200
committerRichard Biener <rguenther@suse.de>2021-05-11 14:47:25 +0200
commit7e0fe7761da9255c9342788956c37b426875d872 (patch)
treec2dbd1904e972f07262e5079fab351710b77add6 /gcc/ipa-param-manipulation.c
parent2ac1f0eb3887335b7a7e845812956fa436e72a91 (diff)
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ipa/100513 - fix SSA_NAME_DEF_STMT corruption in IPA param manip
This fixes unintended clobbering of SSA_NAME_DEF_STMT of the cloned/inlined from SSA name during IPA parameter manipulation of call stmt LHSs. gimple_call_set_lhs adjusts SSA_NAME_DEF_STMT of the lhs to the stmt being modified but when ipa_param_body_adjustments::modify_call_stmt is called the cloning/inlining process has not yet remapped the stmts operands to the copy variants but they are still original. 2021-05-11 Richard Biener <rguenther@suse.de> PR ipa/100513 * ipa-param-manipulation.c (ipa_param_body_adjustments::modify_call_stmt): Avoid altering SSA_NAME_DEF_STMT by adjusting the calls LHS via gimple_call_lhs_ptr.
Diffstat (limited to 'gcc/ipa-param-manipulation.c')
-rw-r--r--gcc/ipa-param-manipulation.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/ipa-param-manipulation.c b/gcc/ipa-param-manipulation.c
index 1d1e64f..f2d9147 100644
--- a/gcc/ipa-param-manipulation.c
+++ b/gcc/ipa-param-manipulation.c
@@ -1692,7 +1692,9 @@ ipa_param_body_adjustments::modify_call_stmt (gcall **stmt_p)
if (tree lhs = gimple_call_lhs (stmt))
{
modify_expression (&lhs, false);
- gimple_call_set_lhs (new_stmt, lhs);
+ /* Avoid adjusting SSA_NAME_DEF_STMT of a SSA lhs, SSA names
+ have not yet been remapped. */
+ *gimple_call_lhs_ptr (new_stmt) = lhs;
}
*stmt_p = new_stmt;
return true;