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author | Richard Biener <rguenther@suse.de> | 2021-05-11 13:23:45 +0200 |
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committer | Richard Biener <rguenther@suse.de> | 2021-05-11 14:47:25 +0200 |
commit | 7e0fe7761da9255c9342788956c37b426875d872 (patch) | |
tree | c2dbd1904e972f07262e5079fab351710b77add6 /gcc/ipa-param-manipulation.c | |
parent | 2ac1f0eb3887335b7a7e845812956fa436e72a91 (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.c | 4 |
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; |