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RISC-V: Fix potential ICE of global vsetvl elimination

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Committed for following VSETVL refactor patch to make V2 patch easier to review.
gcc/ChangeLog:

	* config/riscv/riscv-vsetvl.cc
	(pass_vsetvl::global_eliminate_vsetvl_insn): Fix potential ICE.
This commit is contained in:
Juzhe-Zhong 2023-08-23 10:42:01 +08:00 • committed by Pan Li
parent 29487eb237
commit 3beef5e6b5
1 changed files with 5 additions and 2 deletions
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7
gcc/config/riscv/riscv-vsetvl.cc
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@ -4383,7 +4383,7 @@ pass_vsetvl::global_eliminate_vsetvl_insn (const bb_info *bb) const
unsigned int bb_index;
sbitmap_iterator sbi;
rtx avl = get_avl (dem.get_insn ()->rtl ());
rtx avl = dem.get_avl ();
hash_set<set_info *> sets
= get_all_sets (dem.get_avl_source (), true, false, false);
/* Condition 2: All VL/VTYPE available in are all compatible. */
@ -4407,7 +4407,10 @@ pass_vsetvl::global_eliminate_vsetvl_insn (const bb_info *bb) const
{
sbitmap avout = m_vector_manager->vector_avout[e->src->index];
if (e->src == ENTRY_BLOCK_PTR_FOR_FN (cfun)
|| e->src == EXIT_BLOCK_PTR_FOR_FN (cfun) || bitmap_empty_p (avout))
|| e->src == EXIT_BLOCK_PTR_FOR_FN (cfun)
|| (unsigned int) e->src->index
>= m_vector_manager->vector_block_infos.length ()
|| bitmap_empty_p (avout))
return false;
EXECUTE_IF_SET_IN_BITMAP (avout, 0, bb_index, sbi)