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| author | Steve Ellcey <sje@cup.hp.com> | 2009-02-13 21:59:32 +0000 |
|---|---|---|
| committer | Steve Ellcey <sje@gcc.gnu.org> | 2009-02-13 21:59:32 +0000 |
| commit | c208436c7bef0b3d4aa15073347404b9178e9280 (patch) | |
| tree | 2badc0d5087fc55bf5e504f84afe8003555ac6d1 /gcc | |
| parent | 686c82b505d95d57302821df084c751b9528cea7 (diff) | |
| download | gcc-c208436c7bef0b3d4aa15073347404b9178e9280.zip gcc-c208436c7bef0b3d4aa15073347404b9178e9280.tar.gz gcc-c208436c7bef0b3d4aa15073347404b9178e9280.tar.bz2 | |
re PR target/38056 (Missed tail calls on ia64)
PR target/38056
* config/ia64/ia64.c (ia64_function_ok_for_sibcall): Check
TARGET_CONST_GP.
* gcc.target/ia64/sibcall-opt-1.c: New test.
* gcc.target/ia64/sibcall-opt-2.c: New test.
From-SVN: r144168
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/ia64/ia64.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/ia64/sibcall-opt-1.c | 12 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/ia64/sibcall-opt-2.c | 12 |
5 files changed, 39 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5f8aac0..f4b29ef 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2009-02-13 Steve Ellcey <sje@cup.hp.com> + + PR target/38056 + * config/ia64/ia64.c (ia64_function_ok_for_sibcall): Check + TARGET_CONST_GP. + 2009-02-13 H.J. Lu <hongjiu.lu@intel.com> PR target/39149 diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 6c28801..495d943 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -4365,8 +4365,9 @@ ia64_function_ok_for_sibcall (tree decl, tree exp ATTRIBUTE_UNUSED) return false; /* We must always return with our current GP. This means we can - only sibcall to functions defined in the current module. */ - return decl && (*targetm.binds_local_p) (decl); + only sibcall to functions defined in the current module unless + TARGET_CONST_GP is set to true. */ + return (decl && (*targetm.binds_local_p) (decl)) || TARGET_CONST_GP; } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a0f1650..ca7aece7 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2009-02-13 Steve Ellcey <sje@cup.hp.com> + + PR target/38056 + * gcc.target/ia64/sibcall-opt-1.c: New test. + * gcc.target/ia64/sibcall-opt-2.c: New test. + 2009-02-13 Paul Thomas <pault@gcc.gnu.org> PR fortran/36528 diff --git a/gcc/testsuite/gcc.target/ia64/sibcall-opt-1.c b/gcc/testsuite/gcc.target/ia64/sibcall-opt-1.c new file mode 100644 index 0000000..6e8d1a2 --- /dev/null +++ b/gcc/testsuite/gcc.target/ia64/sibcall-opt-1.c @@ -0,0 +1,12 @@ +/* PR target/38056. Do not do sibcall optimization across object file + boundery when -mconstant-gp is not used. */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ +/* { dg-final { scan-assembler "br.call.*bar" } } */ + +int bar(int x); + +int foo(int x) +{ + return (bar(x + 1)); +} diff --git a/gcc/testsuite/gcc.target/ia64/sibcall-opt-2.c b/gcc/testsuite/gcc.target/ia64/sibcall-opt-2.c new file mode 100644 index 0000000..d802b79 --- /dev/null +++ b/gcc/testsuite/gcc.target/ia64/sibcall-opt-2.c @@ -0,0 +1,12 @@ +/* PR target/38056. Do sibcall optimization across object file + boundery when -mconstant-gp is used. */ +/* { dg-do compile } */ +/* { dg-options "-O2 -mconstant-gp" } */ +/* { dg-final { scan-assembler-not "br.call.*bar" } } */ + +int bar(int x); + +int foo(int x) +{ + return (bar(x + 1)); +} |