From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/gcc.dg/20100906-1.c | 48 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/20100906-1.c (limited to 'gcc/testsuite/gcc.dg/20100906-1.c') diff --git a/gcc/testsuite/gcc.dg/20100906-1.c b/gcc/testsuite/gcc.dg/20100906-1.c new file mode 100644 index 000000000..a6541e3ff --- /dev/null +++ b/gcc/testsuite/gcc.dg/20100906-1.c @@ -0,0 +1,48 @@ +/* { dg-do run } */ +/* { dg-options "-O2" } */ + +/* This testcase got misoptimized by combine due to a wrong setting of + subst_low_luid in try_combine. */ + +enum rtx_code { + A, B +}; + +void abort (void); + +struct rtx_def { + __extension__ enum rtx_code code:16; +}; +typedef struct rtx_def *rtx; + +void __attribute__((noinline)) +add_constraint (unsigned char is_a) +{ + if (is_a) + abort (); +} + +void __attribute__((noinline)) +foo (rtx defn) +{ + switch (defn->code) + { + case A: + case B: + add_constraint (defn->code == A); + break; + default: + break; + } +} + +int +main () +{ + struct rtx_def r; + + r.code = B; + + foo (&r); + return 0; +} -- cgit v1.2.3