Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-4.c @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-vrp1-details -fdump-tree-dom2-details -std=gnu89 --param logical-op-non-short-circuit=1" } */ struct bitmap_head_def; typedef struct bitmap_head_def *bitmap; typedef const struct bitmap_head_def *const_bitmap; typedef unsigned long BITMAP_WORD; typedef struct bitmap_element_def { struct bitmap_element_def *next; unsigned int indx; } bitmap_element; unsigned char bitmap_ior_and_compl (bitmap dst, const_bitmap a, const_bitmap b, const_bitmap kill) { unsigned char changed = 0; bitmap_element *dst_elt; const bitmap_element *a_elt, *b_elt, *kill_elt, *dst_prev; while (a_elt || b_elt) { unsigned char new_element = 0; if (b_elt) while (kill_elt && kill_elt->indx < b_elt->indx) kill_elt = kill_elt->next; if (b_elt && kill_elt && kill_elt->indx == b_elt->indx && (!a_elt || a_elt->indx >= b_elt->indx)) { bitmap_element tmp_elt; unsigned ix; BITMAP_WORD ior = 0; changed = bitmap_elt_ior (dst, dst_elt, dst_prev, a_elt, &tmp_elt, changed); } } return changed; } /* The block starting the second conditional has 3 incoming edges, we should thread all three, but due to a bug in the threading code we missed the edge when the first conditional is false (b_elt is zero, which means the second conditional is always zero. VRP1 catches all three. */ /* { dg-final { scan-tree-dump-times "Threaded" 3 "vrp1" } } */