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| author | Jakub Jelinek <jakub@redhat.com> | 2012-03-28 16:47:45 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2012-03-28 16:47:45 +0200 |
| commit | f25a65f5d1c160e8e90bd8b4bfdc30437d00b482 (patch) | |
| tree | 9ae131a36d66e181fa70e08625f81cc6b17e71d7 /gcc/testsuite | |
| parent | 6df000ae2d8ce9dfb1e1c1198b30559ca8a1f290 (diff) | |
| download | gcc-f25a65f5d1c160e8e90bd8b4bfdc30437d00b482.zip gcc-f25a65f5d1c160e8e90bd8b4bfdc30437d00b482.tar.gz gcc-f25a65f5d1c160e8e90bd8b4bfdc30437d00b482.tar.bz2 | |
re PR middle-end/52691 (va_start to builtin_next_arg optimization lost)
PR middle-end/52691
* tree-ssa-ccp.c (optimize_stdarg_builtin): Optimize
__builtin_va_start to __builtin_next_arg if the latter is
builtin_decl_explicit_p rather than when it is not.
* gcc.dg/pr52691.c: New test.
From-SVN: r185917
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr52691.c | 24 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index d334475..b965221 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2012-03-28 Jakub Jelinek <jakub@redhat.com> + PR middle-end/52691 + * gcc.dg/pr52691.c: New test. + PR middle-end/52750 * gcc.c-torture/compile/pr52750.c: New test. diff --git a/gcc/testsuite/gcc.dg/pr52691.c b/gcc/testsuite/gcc.dg/pr52691.c new file mode 100644 index 0000000..7a2d7d8 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr52691.c @@ -0,0 +1,24 @@ +/* PR middle-end/52691 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +#include <stdarg.h> + +int +foo (int a, ...) +{ + int b = 0, c = 0; + va_list ap; + va_start (ap, a); + if (a > 1) + b = va_arg (ap, double); + if (a > 2) + c = va_arg (ap, long long); + va_end (ap); + return a + b + c; +} + +/* { dg-final { scan-tree-dump "__builtin_next_arg" "optimized" { target { { i?86-*-* x86_64-*-* } && ia32 } } } } */ +/* { dg-final { scan-tree-dump "__builtin_next_arg" "optimized" { target { powerpc*-*-darwin* powerpc*-*-aix* } } } } */ +/* { dg-final { scan-tree-dump "__builtin_next_arg" "optimized" { target { powerpc*-*-linux* && lp64 } } } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |