diff options
Diffstat (limited to 'yocto-poky/meta/recipes-devtools/gcc/gcc-5.2/0037-pr65779.patch')
-rw-r--r-- | yocto-poky/meta/recipes-devtools/gcc/gcc-5.2/0037-pr65779.patch | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/yocto-poky/meta/recipes-devtools/gcc/gcc-5.2/0037-pr65779.patch b/yocto-poky/meta/recipes-devtools/gcc/gcc-5.2/0037-pr65779.patch deleted file mode 100644 index 1424673df..000000000 --- a/yocto-poky/meta/recipes-devtools/gcc/gcc-5.2/0037-pr65779.patch +++ /dev/null @@ -1,173 +0,0 @@ -List-Id: <gcc-patches.gcc.gnu.org> -List-Archive: <http://gcc.gnu.org/ml/gcc-patches/> -List-Post: <mailto:gcc-patches at gcc dot gnu dot org> -List-Help: <mailto:gcc-patches-help at gcc dot gnu dot org> -Date: Mon, 20 Apr 2015 12:40:49 +0930 -From: Alan Modra <amodra at gmail dot com> -To: gcc-patches at gcc dot gnu dot org -Subject: [Patch] pr65779 - [5/6 Regression] undefined local symbol on powerpc - -This patch removes bogus debug info left around by shrink-wrapping, -which on some powerpc targets with just the right register allocation -led to assembly errors. - -Bootstrapped and regression tested powerpc64-linux and x86_64-linux. - -https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65779 - -gcc/ - PR debug/65779 - * shrink-wrap.c (insn_uses_reg): New function. - (move_insn_for_shrink_wrap): Remove debug insns using regs set - by the moved insn. -gcc/testsuite/ - * gcc.dg/pr65779.c: New. - -Upstream-Status: Pending (from mailing list, not merged yet) - -Index: a/gcc/shrink-wrap.c -=================================================================== ---- a/gcc/shrink-wrap.c.orig -+++ b/gcc/shrink-wrap.c -@@ -182,6 +182,21 @@ live_edge_for_reg (basic_block bb, int r - return live_edge; - } - -+static bool -+insn_uses_reg (rtx_insn *insn, unsigned int regno, unsigned int end_regno) -+{ -+ df_ref use; -+ -+ FOR_EACH_INSN_USE (use, insn) -+ { -+ rtx reg = DF_REF_REG (use); -+ -+ if (REG_P (reg) && REGNO (reg) >= regno && REGNO (reg) < end_regno) -+ return true; -+ } -+ return false; -+} -+ - /* Try to move INSN from BB to a successor. Return true on success. - USES and DEFS are the set of registers that are used and defined - after INSN in BB. SPLIT_P indicates whether a live edge from BB -@@ -340,10 +355,15 @@ move_insn_for_shrink_wrap (basic_block b - *split_p = true; - } - -+ vec<basic_block> live_bbs; -+ if (MAY_HAVE_DEBUG_INSNS) -+ live_bbs.create (5); - /* At this point we are committed to moving INSN, but let's try to - move it as far as we can. */ - do - { -+ if (MAY_HAVE_DEBUG_INSNS) -+ live_bbs.safe_push (bb); - live_out = df_get_live_out (bb); - live_in = df_get_live_in (next_block); - bb = next_block; -@@ -426,6 +446,34 @@ move_insn_for_shrink_wrap (basic_block b - SET_REGNO_REG_SET (bb_uses, i); - } - -+ /* Remove debug insns using regs set by the insn we are moving. */ -+ if (MAY_HAVE_DEBUG_INSNS) -+ { -+ while (!live_bbs.is_empty ()) -+ { -+ rtx_insn *dinsn; -+ basic_block tmp_bb = live_bbs.pop (); -+ -+ FOR_BB_INSNS_REVERSE (tmp_bb, dinsn) -+ { -+ if (dinsn == insn) -+ break; -+ if (DEBUG_INSN_P (dinsn) -+ && insn_uses_reg (dinsn, dregno, end_dregno)) -+ { -+ if (*split_p) -+ /* If split, then we will be moving insn into a -+ newly created block immediately after the entry -+ block. Move the debug info there too. */ -+ emit_debug_insn_after (PATTERN (dinsn), bb_note (bb)); -+ delete_insn (dinsn); -+ break; -+ } -+ } -+ } -+ live_bbs.release (); -+ } -+ - emit_insn_after (PATTERN (insn), bb_note (bb)); - delete_insn (insn); - return true; -Index: b/gcc/testsuite/gcc.dg/pr65779.c -=================================================================== ---- /dev/null -+++ b/gcc/testsuite/gcc.dg/pr65779.c -@@ -0,0 +1,64 @@ -+/* { dg-do run } */ -+/* { dg-options "-O2 -g" } */ -+/* { dg-additional-options "-mrelocatable" { target powerpc-*-rtems* } } */ -+ -+unsigned long __attribute__ ((noinline)) -+adler32 (unsigned long adler, unsigned char *buf, unsigned int len) -+{ -+ unsigned long s1 = adler & 0xffff; -+ unsigned long s2 = (adler >> 16) & 0xffff; -+ int k; -+ -+ if (buf == 0) -+ return 1L; -+ -+ while (len > 0) -+ { -+ k = len < 5552 ? len : 5552; -+ len -= k; -+ while (k >= 16) -+ { -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ s1 += *buf++; s2 += s1; -+ k -= 16; -+ } -+ if (k != 0) -+ do -+ { -+ s1 += *buf++; s2 += s1; -+ } while (--k); -+ s1 &= 0xffffffffUL; -+ s2 &= 0xffffffffUL; -+ s1 %= 65521L; -+ s2 %= 65521L; -+ } -+ return (s2 << 16) | s1; -+} -+ -+unsigned char buf[] = { 0, 1, 2, 3, 4, 5, 6, 7, -+ 8, 9, 10, 11, 12, 13, 14, 15, -+ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, -+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, -+ 0x55, 0xaa }; -+int -+main () -+{ -+ unsigned long x = adler32 (0, buf, sizeof buf); -+ if (x != 0x640409efUL) -+ __builtin_abort (); -+ return 0; -+} |