diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/asm-b.c | 39 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c | 18 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c | 17 | ||||
| -rw-r--r-- | gcc/tree-ssa-alias.c | 4 |
6 files changed, 89 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index dbff6a7..4b0fee5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2005-02-26 Andrew Pinski <pinskia@physics.uc.edu> + + PR tree-opt/20188 + * tree-ssa-alias.c (count_uses_and_derefs): If we have TREE_LIST + for the lhs, also walk over the tree. Likewise for rhs. + 2005-02-26 Zdenek Dvorak <dvorakz@suse.cz> * tree-ssa-dom.c (simple_iv_increment_p): New function. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 6a89a20..9ab9ada 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,10 @@ +2005-02-26 Andrew Pinski <pinskia@physics.uc.edu> + + PR tree-opt/20188 + * gcc.dg/tree-ssa/inline_asm-1.c: New test. + * gcc.dg/tree-ssa/inline_asm-2.c: New test. + * gcc.dg/asm-b.c: New test. + 2005-02-26 Richard Sandiford <rsandifo@redhat.com> * gcc.c-torture/execute/ieee/mul-subnormal-single-1.x: New file. diff --git a/gcc/testsuite/gcc.dg/asm-b.c b/gcc/testsuite/gcc.dg/asm-b.c new file mode 100644 index 0000000..ce68cab --- /dev/null +++ b/gcc/testsuite/gcc.dg/asm-b.c @@ -0,0 +1,39 @@ +/* { dg-do run { target powerpc-*-* i?386-*-* x86_64-*-* } } */ +/* { dg-options "-O1" } */ +/* Test to make sure that inline-asm causes the tree optimizators get the + V_MAY_DEFs and clober 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) + __asm __volatile ("sthbrx %1,0,%2" : "=m" (*z) : "r" (y), "r" (z)); +#elif defined __i386__ || defined __x86_64__ + __asm __volatile ("movb %b1,1(%2); movb %h1,(%2)" : "=m" (*z) : "r" (y), "r" +(z)); +#endif + return (x & 1) == 0; +} + +int +main (void) +{ + if (bar ()) + abort (); + return 0; +} diff --git a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c new file mode 100644 index 0000000..4b241c3 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c @@ -0,0 +1,18 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fdump-tree-optimized -fdump-tree-alias1-vops" } */ +/* Test to make sure that inline-asm causes a V_MAY_DEF and that we call test_function twice. */ + +char test_function(void ) __attribute__((__pure__)); +char f(char *a) +{ + char b = test_function(); + asm("":"=m"(*a):"r"(b)); + b = test_function(); + return b; +} + +/* test_function should be called twice as the inline-asm changes memory. */ +/* { dg-final { scan-tree-dump-times "test_function" 2 "optimized"} } */ + +/* There should a V_MAY_DEF for the inline-asm. */ +/* { dg-final { scan-tree-dump-times "V_MAY_DEF" 1 "alias1"} } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c new file mode 100644 index 0000000..bc4039f --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c @@ -0,0 +1,17 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -fdump-tree-alias1-vops" } */ +/* Test to make sure that inline-asm causes a V_MAY_DEF. */ + + +void link_error(); +void f(char *a) +{ + int *a1 = (int *)a; + if (*a == 0) + asm("":"=m"(*a1)); + if (*a == 0) + link_error (); +} + +/* There should a V_MAY_DEF for the inline-asm. */ +/* { dg-final { scan-tree-dump-times "V_MAY_DEF" 1 "alias1"} } */ diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index f6cdf99..1adcd83 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -446,7 +446,7 @@ count_uses_and_derefs (tree ptr, tree stmt, unsigned *num_uses_p, rhs = stmt; } - if (lhs && EXPR_P (lhs)) + if (lhs && (TREE_CODE (lhs) == TREE_LIST || EXPR_P (lhs))) { struct count_ptr_d count; count.ptr = ptr; @@ -456,7 +456,7 @@ count_uses_and_derefs (tree ptr, tree stmt, unsigned *num_uses_p, *num_derefs_p = count.count; } - if (rhs && EXPR_P (rhs)) + if (rhs && (TREE_CODE (rhs) == TREE_LIST || EXPR_P (rhs))) { struct count_ptr_d count; count.ptr = ptr; |