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| author | Jan Hubicka <hubicka@ucw.cz> | 2014-11-10 20:14:17 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2014-11-10 19:14:17 +0000 |
| commit | fe8dd12e2057860085caad10d0f4d2c681ff8bf9 (patch) | |
| tree | ea3e010ea64a6fc13c330cfb2ace81f92aea443d | |
| parent | be8118c57b2b52b71f27c74c9db2495cf9466c41 (diff) | |
| download | gcc-fe8dd12e2057860085caad10d0f4d2c681ff8bf9.zip gcc-fe8dd12e2057860085caad10d0f4d2c681ff8bf9.tar.gz gcc-fe8dd12e2057860085caad10d0f4d2c681ff8bf9.tar.bz2 | |
re PR bootstrap/63573 (libgo: ICE building libgo on powerpc-linux-gnu)
PR bootstrap/63573
* calls.c (initialize_argument_information): When emitting thunk call
use original memory placement of the argument.
From-SVN: r217307
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/calls.c | 10 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index f29986b..10bd480 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2014-11-10 Jan Hubicka <hubicka@ucw.cz> + + PR bootstrap/63573 + * calls.c (initialize_argument_information): When emitting thunk call + use original memory placement of the argument. + 2014-11-10 Renlin Li <renlin.li@arm.com> PR middle-end/61529 diff --git a/gcc/calls.c b/gcc/calls.c index 06b8485..7f55aaf 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1304,6 +1304,16 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED, && TREE_CODE (base) != SSA_NAME && (!DECL_P (base) || MEM_P (DECL_RTL (base))))) { + /* Argument setup code may have copied the value to register. We + revert that optimization now because the tail call code must + use the original location. */ + if (TREE_CODE (args[i].tree_value) == PARM_DECL + && !MEM_P (DECL_RTL (args[i].tree_value)) + && DECL_INCOMING_RTL (args[i].tree_value) + && MEM_P (DECL_INCOMING_RTL (args[i].tree_value))) + set_decl_rtl (args[i].tree_value, + DECL_INCOMING_RTL (args[i].tree_value)); + mark_addressable (args[i].tree_value); /* We can't use sibcalls if a callee-copied argument is |