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/asm-b.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/asm-b.c (limited to 'gcc/testsuite/gcc.dg/asm-b.c') diff --git a/gcc/testsuite/gcc.dg/asm-b.c b/gcc/testsuite/gcc.dg/asm-b.c new file mode 100644 index 000000000..f888839ab --- /dev/null +++ b/gcc/testsuite/gcc.dg/asm-b.c @@ -0,0 +1,39 @@ +/* { dg-do run { target powerpc*-*-* i?86-*-* x86_64-*-* } } */ +/* { dg-options "-O1" } */ +/* Test to make sure that inline-asm causes the tree optimizers to get the + V_MAY_DEFs and clobber memory. */ +/* Test from Jakub Jelinek, modified by Andrew Pinski to work on all powerpc targets. */ +extern void abort (void); + +unsigned short v = 0x0300; + +void +foo (unsigned short *p) +{ + *p = v; +} + +int +bar (void) +{ + unsigned short x; + volatile unsigned short *z; + foo (&x); + const unsigned int y = x; + z = &x; +#if defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) || defined (_POWER) || defined (__ppc64__) || defined (__ppc) + __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z)); +#elif defined __i386__ || defined __x86_64__ + __asm __volatile ("movb %b1,1(%2)\n\tmovb %h1,(%2)" + : "=m" (*z) : "Q" (y), "R" (z)); +#endif + return (x & 1) == 0; +} + +int +main (void) +{ + if (bar ()) + abort (); + return 0; +} -- cgit v1.2.3