tree-optimization/106513 - fix mistake in bswap symbolic number shifts
This fixes a mistake in typing a local variable in the symbolic
shift routine.
PR tree-optimization/106513
* gimple-ssa-store-merging.cc (do_shift_rotate): Use uint64_t
for head_marker.
* gcc.dg/torture/pr106513.c: New testcase.
(cherry picked from commit f675afa4ee
)
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@ -263,7 +263,7 @@ do_shift_rotate (enum tree_code code,
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int count)
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int count)
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{
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{
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int i, size = TYPE_PRECISION (n->type) / BITS_PER_UNIT;
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int i, size = TYPE_PRECISION (n->type) / BITS_PER_UNIT;
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unsigned head_marker;
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uint64_t head_marker;
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if (count < 0
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if (count < 0
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|| count >= TYPE_PRECISION (n->type)
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|| count >= TYPE_PRECISION (n->type)
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@ -0,0 +1,26 @@
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/* { dg-do run } */
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typedef __INT64_TYPE__ int64_t;
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__attribute__((noinline)) int64_t
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swap64 (int64_t n)
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{
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return (((n & (((int64_t) 0xff) )) << 56) |
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((n & (((int64_t) 0xff) << 8)) << 40) |
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((n & (((int64_t) 0xff) << 16)) << 24) |
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((n & (((int64_t) 0xff) << 24)) << 8) |
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((n & (((int64_t) 0xff) << 32)) >> 8) |
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((n & (((int64_t) 0xff) << 40)) >> 24) |
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((n & (((int64_t) 0xff) << 48)) >> 40) |
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((n & ((int64_t)(0xffull << 56))) >> 56));
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}
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int main (void)
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{
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volatile int64_t n = 0x8000000000000000ll;
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if (swap64(n) != 0xffffffffffffff80ll)
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__builtin_abort ();
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return 0;
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}
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