Hello. Following patch fixes issue mentioned in $subject. Problem is connected to thunks that become expanded during WPA phase of LTO.
Patch can bootstrap on ppc64le-redhat-linux and survives regression tests. Ready to be installed? Martin
>From a41a5b1e3b7451c711c520b38f4603c2976a4b02 Mon Sep 17 00:00:00 2001 From: marxin <mli...@suse.cz> Date: Thu, 20 Oct 2016 15:33:31 +0200 Subject: [PATCH] Do not fixup edges for a thunk in LTRANS (PR lto/78049) gcc/ChangeLog: 2016-10-20 Martin Liska <mli...@suse.cz> PR lto/78049 * lto-streamer-in.c (fixup_call_stmt_edges_1): Replace value comparison with STMT_UID_NOT_IN_RANGE. (fixup_call_stmt_edges): Do not fixup edges of a thunk in LTRANS. --- gcc/lto-streamer-in.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/gcc/lto-streamer-in.c b/gcc/lto-streamer-in.c index f852bf9..1f39e6b 100644 --- a/gcc/lto-streamer-in.c +++ b/gcc/lto-streamer-in.c @@ -889,13 +889,16 @@ static void fixup_call_stmt_edges_1 (struct cgraph_node *node, gimple **stmts, struct function *fn) { +#define STMT_UID_NOT_IN_RANGE(uid) \ + (gimple_stmt_max_uid (fn) < uid || uid == 0) + struct cgraph_edge *cedge; struct ipa_ref *ref = NULL; unsigned int i; for (cedge = node->callees; cedge; cedge = cedge->next_callee) { - if (gimple_stmt_max_uid (fn) < cedge->lto_stmt_uid) + if (STMT_UID_NOT_IN_RANGE (cedge->lto_stmt_uid)) fatal_error (input_location, "Cgraph edge statement index out of range"); cedge->call_stmt = as_a <gcall *> (stmts[cedge->lto_stmt_uid - 1]); @@ -905,7 +908,7 @@ fixup_call_stmt_edges_1 (struct cgraph_node *node, gimple **stmts, } for (cedge = node->indirect_calls; cedge; cedge = cedge->next_callee) { - if (gimple_stmt_max_uid (fn) < cedge->lto_stmt_uid) + if (STMT_UID_NOT_IN_RANGE (cedge->lto_stmt_uid)) fatal_error (input_location, "Cgraph edge statement index out of range"); cedge->call_stmt = as_a <gcall *> (stmts[cedge->lto_stmt_uid - 1]); @@ -915,7 +918,7 @@ fixup_call_stmt_edges_1 (struct cgraph_node *node, gimple **stmts, for (i = 0; node->iterate_reference (i, ref); i++) if (ref->lto_stmt_uid) { - if (gimple_stmt_max_uid (fn) < ref->lto_stmt_uid) + if (STMT_UID_NOT_IN_RANGE (ref->lto_stmt_uid)) fatal_error (input_location, "Reference statement index out of range"); ref->stmt = stmts[ref->lto_stmt_uid - 1]; @@ -937,7 +940,8 @@ fixup_call_stmt_edges (struct cgraph_node *orig, gimple **stmts) orig = orig->clone_of; fn = DECL_STRUCT_FUNCTION (orig->decl); - fixup_call_stmt_edges_1 (orig, stmts, fn); + if (!orig->thunk.thunk_p) + fixup_call_stmt_edges_1 (orig, stmts, fn); if (orig->clones) for (node = orig->clones; node != orig;) { -- 2.10.1