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.c-torture/execute/20080519-1.c | 58 ++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 gcc/testsuite/gcc.c-torture/execute/20080519-1.c (limited to 'gcc/testsuite/gcc.c-torture/execute/20080519-1.c') diff --git a/gcc/testsuite/gcc.c-torture/execute/20080519-1.c b/gcc/testsuite/gcc.c-torture/execute/20080519-1.c new file mode 100644 index 000000000..303c4e65f --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/20080519-1.c @@ -0,0 +1,58 @@ +extern void abort (void); + +typedef unsigned long HARD_REG_SET[2]; +HARD_REG_SET reg_class_contents[2]; + +struct du_chain +{ + struct du_chain *next_use; + int cl; +}; + +void __attribute__((noinline)) +merge_overlapping_regs (HARD_REG_SET *p) +{ + if ((*p)[0] != -1 || (*p)[1] != -1) + abort (); +} + +void __attribute__((noinline)) +regrename_optimize (struct du_chain *this) +{ + HARD_REG_SET this_unavailable; + unsigned long *scan_fp_; + int n_uses; + struct du_chain *last; + + this_unavailable[0] = 0; + this_unavailable[1] = 0; + + n_uses = 0; + for (last = this; last->next_use; last = last->next_use) + { + scan_fp_ = reg_class_contents[last->cl]; + n_uses++; + this_unavailable[0] |= ~ scan_fp_[0]; + this_unavailable[1] |= ~ scan_fp_[1]; + } + if (n_uses < 1) + return; + + scan_fp_ = reg_class_contents[last->cl]; + this_unavailable[0] |= ~ scan_fp_[0]; + this_unavailable[1] |= ~ scan_fp_[1]; + + merge_overlapping_regs (&this_unavailable); +} + +int main() +{ + struct du_chain du1 = { 0, 0 }; + struct du_chain du0 = { &du1, 1 }; + reg_class_contents[0][0] = -1; + reg_class_contents[0][1] = -1; + reg_class_contents[1][0] = 0; + reg_class_contents[1][1] = 0; + regrename_optimize (&du0); + return 0; +} -- cgit v1.2.3