From 6b7d03d89789dda21af8893d424f555bf5b33d42 Mon Sep 17 00:00:00 2001 From: hubicka Date: Tue, 7 Apr 2015 21:02:12 +0000 Subject: [PATCH] PR ipa/65540 * calls.c (initialize_argument_information): When producing tail call also turn SSA_NAMES passed by references to original PARM_DECLs * gcc.c-torture/compile/pr65540.c: New. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@221910 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/calls.c | 9 +++++++++ gcc/testsuite/ChangeLog | 5 +++++ gcc/testsuite/gcc.c-torture/compile/pr65540.c | 21 +++++++++++++++++++++ 4 files changed, 41 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/compile/pr65540.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 315eafc2721..7de54510bd4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-04-07 Jan Hubicka + + PR ipa/65540 + * calls.c (initialize_argument_information): When producing tail + call also turn SSA_NAMES passed by references to original PARM_DECLs + 2015-04-07 Vladimir Makarov PR target/65648 diff --git a/gcc/calls.c b/gcc/calls.c index ec44624d7c9..970415d6592 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -1321,6 +1321,15 @@ initialize_argument_information (int num_actuals ATTRIBUTE_UNUSED, && TREE_CODE (base) != SSA_NAME && (!DECL_P (base) || MEM_P (DECL_RTL (base))))) { + /* We may have turned the parameter value into an SSA name. + Go back to the original parameter so we can take the + address. */ + if (TREE_CODE (args[i].tree_value) == SSA_NAME) + { + gcc_assert (SSA_NAME_IS_DEFAULT_DEF (args[i].tree_value)); + args[i].tree_value = SSA_NAME_VAR (args[i].tree_value); + gcc_assert (TREE_CODE (args[i].tree_value) == PARM_DECL); + } /* 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. */ diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d46d726b8da..74a39ec2a23 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2015-04-07 Jan Hubicka + + PR ipa/65540 + * gcc.c-torture/compile/pr65540.c: New. + 2015-04-07 Alan Lawrence * gcc.target/aarch64/c-output-template-3.c: Add -O, remove diff --git a/gcc/testsuite/gcc.c-torture/compile/pr65540.c b/gcc/testsuite/gcc.c-torture/compile/pr65540.c new file mode 100644 index 00000000000..7b0fb569af1 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr65540.c @@ -0,0 +1,21 @@ +long double func1 (long double x) +{ + if (x > 0.0) + return x; + else if (x < 0.0) + return -x; + else + return x; +} + +long double func2 (long double x) +{ + if (x > 0.0) + return x; + else if (x < 0.0) + return -x; + else + return x; +} + + -- 2.11.4.GIT