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| author | Paolo Bonzini <bonzini@gnu.org> | 2008-07-17 09:07:31 +0000 |
|---|---|---|
| committer | Paolo Bonzini <bonzini@gcc.gnu.org> | 2008-07-17 09:07:31 +0000 |
| commit | b08c51086fceec9cd27858dae48bf55fbbfccc1c (patch) | |
| tree | 281a1a220070390be3fb15977c0425a4318f99c9 /gcc/testsuite | |
| parent | 8a63781b058d0ef87b54a648cd00fd2e96cd69c1 (diff) | |
| download | gcc-b08c51086fceec9cd27858dae48bf55fbbfccc1c.zip gcc-b08c51086fceec9cd27858dae48bf55fbbfccc1c.tar.gz gcc-b08c51086fceec9cd27858dae48bf55fbbfccc1c.tar.bz2 | |
re PR middle-end/36753 (Forward propagation interacts badly with global register variable)
gcc:
2008-07-17 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/36753
* fwprop.c (use_killed_between): Don't shortcut
single-definition global registers.
gcc/testsuite:
2008-07-17 Paolo Bonzini <bonzini@gnu.org>
PR rtl-optimization/36753
* gcc.target/i386/pr36753.c: New.
From-SVN: r137913
Diffstat (limited to 'gcc/testsuite')
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr36753.c | 31 |
2 files changed, 36 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 54da1a1..ec7dc05 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2008-07-17 Paolo Bonzini <bonzini@gnu.org> + + PR rtl-optimization/36753 + * gcc.target/i386/pr36753.c: New. + 2008-07-17 Tobias Burnus <burnus@net-b.de> PR fortran/36825 diff --git a/gcc/testsuite/gcc.target/i386/pr36753.c b/gcc/testsuite/gcc.target/i386/pr36753.c new file mode 100644 index 0000000..2d43d42 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr36753.c @@ -0,0 +1,31 @@ +/* { dg-options "-O2" } */ +/* { dg-do run } */ + +#if defined __i386__ +#define REG "edi" +#else +#define REG "r14" +#endif + +register unsigned long *ds asm(REG); + +extern void abort (void); + +__attribute__ ((noinline)) void +test (void) +{ + *++ds = 31337; +} + +int +main () +{ + unsigned long stack[2]; + stack[0] = 0; + stack[1] = 0; + ds = stack; + test (); + if (ds != stack + 1 || *ds != 31337) + abort (); + return 0; +} |