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| author | Mark Mitchell <mark@codesourcery.com> | 2003-07-18 03:05:27 +0000 |
|---|---|---|
| committer | Mark Mitchell <mmitchel@gcc.gnu.org> | 2003-07-18 03:05:27 +0000 |
| commit | 2b187c63e263707a88b01352880a24107baa88be (patch) | |
| tree | 3a201d49170ff7a8281bb7bf1202e847d42a3bda /gcc | |
| parent | fea4065dda83f9ab8ca438275d82dc3740bab689 (diff) | |
| download | gcc-2b187c63e263707a88b01352880a24107baa88be.zip gcc-2b187c63e263707a88b01352880a24107baa88be.tar.gz gcc-2b187c63e263707a88b01352880a24107baa88be.tar.bz2 | |
re PR rtl-optimization/11557 (constant folding)
PR optimization/11557
* calls.c (flags_from_decl_or_type): Do not set ECF_LIBCALL_BLOCK
unless we know which function is being called.
PR optimization/11557
* gcc.dg/20030717-1.c: New test.
From-SVN: r69538
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/calls.c | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/20030717-1.c | 24 |
4 files changed, 39 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3784190..0fe5852 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-07-17 Mark Mitchell <mark@codesourcery.com> + + PR optimization/11557 + * calls.c (flags_from_decl_or_type): Do not set ECF_LIBCALL_BLOCK + unless we know which function is being called. + 2003-07-17 Roger Sayle <roger@eyesopen.com> * cse.c (fold_rtx): Use swap_commutative_operands_p to determine diff --git a/gcc/calls.c b/gcc/calls.c index ef4926e..845934e 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -730,10 +730,13 @@ flags_from_decl_or_type (tree exp) if (TREE_NOTHROW (exp)) flags |= ECF_NOTHROW; + + if (TREE_READONLY (exp) && ! TREE_THIS_VOLATILE (exp)) + flags |= ECF_LIBCALL_BLOCK; } if (TREE_READONLY (exp) && ! TREE_THIS_VOLATILE (exp)) - flags |= ECF_CONST | ECF_LIBCALL_BLOCK; + flags |= ECF_CONST; if (TREE_THIS_VOLATILE (exp)) flags |= ECF_NORETURN; diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index b0b3f44..91f7815 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2003-07-17 Mark Mitchell <mark@codesourcery.com> + + PR optimization/11557 + * gcc.dg/20030717-1.c: New test. + 2003-07-17 Andrew Pinski <pinskia@physics.uc.edu> PR c++/10476 diff --git a/gcc/testsuite/gcc.dg/20030717-1.c b/gcc/testsuite/gcc.dg/20030717-1.c new file mode 100644 index 0000000..6a7f6de --- /dev/null +++ b/gcc/testsuite/gcc.dg/20030717-1.c @@ -0,0 +1,24 @@ +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +extern void abort (void); + +int zero (void) +{ + return 0; +} + +int one (void) +{ + return 1; +} + +int main (void) +{ + int i = 1; + int r = (i ? one : zero)(); + if (r != 1) + abort(); + return 0; +} + |