Update the type of control.base after changed
This patch correct the type of niter->control.base, when it is updated as a PLUS expr. During build PLUS expr, the result type should align with the type of the operands. PR tree-optimization/102087 gcc/ChangeLog: * tree-ssa-loop-niter.cc (number_of_iterations_until_wrap): Correct PLUS result type. gcc/testsuite/ChangeLog: * gcc.dg/pr102087_1.c: New test.
This commit is contained in:
parent
add6bb52e3
commit
634de54f9c
|
@ -0,0 +1,13 @@
|
|||
/* PR tree-optimization/102087 */
|
||||
/* { dg-do compile } */
|
||||
/* { dg-options "-O3 -fprefetch-loop-arrays -w" { target x86_64-*-* powerpc*-*-* } } */
|
||||
|
||||
char **Gif_ClipImage_gfi_0;
|
||||
int Gif_ClipImage_gfi_1, Gif_ClipImage_y, Gif_ClipImage_shift;
|
||||
void Gif_ClipImage() {
|
||||
Gif_ClipImage_y = Gif_ClipImage_gfi_1 - 1;
|
||||
for (; Gif_ClipImage_y >= Gif_ClipImage_shift; Gif_ClipImage_y++)
|
||||
Gif_ClipImage_gfi_0[Gif_ClipImage_shift] =
|
||||
Gif_ClipImage_gfi_0[Gif_ClipImage_y];
|
||||
}
|
||||
|
|
@ -1579,8 +1579,21 @@ number_of_iterations_until_wrap (class loop *loop, tree type, affine_iv *iv0,
|
|||
{ IVbase - STEP, +, STEP } != bound
|
||||
Here, biasing IVbase by 1 step makes 'bound' be the value before wrap.
|
||||
*/
|
||||
niter->control.base = fold_build2 (MINUS_EXPR, niter_type,
|
||||
niter->control.base, niter->control.step);
|
||||
tree base_type = TREE_TYPE (niter->control.base);
|
||||
if (POINTER_TYPE_P (base_type))
|
||||
{
|
||||
tree utype = unsigned_type_for (base_type);
|
||||
niter->control.base
|
||||
= fold_build2 (MINUS_EXPR, utype,
|
||||
fold_convert (utype, niter->control.base),
|
||||
fold_convert (utype, niter->control.step));
|
||||
niter->control.base = fold_convert (base_type, niter->control.base);
|
||||
}
|
||||
else
|
||||
niter->control.base
|
||||
= fold_build2 (MINUS_EXPR, base_type, niter->control.base,
|
||||
niter->control.step);
|
||||
|
||||
span = fold_build2 (MULT_EXPR, niter_type, niter->niter,
|
||||
fold_convert (niter_type, niter->control.step));
|
||||
niter->bound = fold_build2 (PLUS_EXPR, niter_type, span,
|
||||
|
|
Loading…
Reference in New Issue