From 6c5bfec01b00cdba798a01e25a38c3f211c32b2b Mon Sep 17 00:00:00 2001 From: Kaz Kojima Date: Wed, 21 Mar 2012 20:19:31 +0000 Subject: [PATCH] PR/target 52642 PR/target 52642 * config/sh/sh.c (sh_expand_prologue): Emit blockage at the end of prologue for unwinder and profiler. From-SVN: r185616 --- gcc/ChangeLog | 6 ++++++ gcc/config/sh/sh.c | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index efa5bfbf2a6..fd07ac60844 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-03-21 Kaz Kojima + + PR/target 52642 + * config/sh/sh.c (sh_expand_prologue): Emit blockage at the end of + prologue for unwinder and profiler. + 2012-03-21 Andreas Tobler * configure.ac (HAVE_LD_NO_DOT_SYMBOLS): Add powerpc64-*-freebsd*. diff --git a/gcc/config/sh/sh.c b/gcc/config/sh/sh.c index 4b5db674e82..1bfd89b44b7 100644 --- a/gcc/config/sh/sh.c +++ b/gcc/config/sh/sh.c @@ -7239,6 +7239,13 @@ sh_expand_prologue (void) emit_insn (gen_shcompact_incoming_args ()); } + /* If we are profiling, make sure no instructions are scheduled before + the call to mcount. Similarly if some call instructions are swapped + before frame related insns, it'll confuse the unwinder because + currently SH has no unwind info for function epilogues. */ + if (crtl->profile || flag_exceptions || flag_unwind_tables) + emit_insn (gen_blockage ()); + if (flag_stack_usage_info) current_function_static_stack_size = stack_usage; } -- 2.30.2