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Fix ICE when lhs is NULL.

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gcc/ChangeLog:
	PR target/100660
	* config/i386/i386.c (ix86_gimple_fold_builtin): Replacing
	stmt with GIMPLE_NOP when lhs doesn't exist.

gcc/testsuite/ChangeLog:
	PR target/100660
	* gcc.target/i386/pr100660.c: New test.
This commit is contained in:
liuhongt 2021-05-20 09:59:36 +08:00
parent 1040a44aa2
commit dc084c487e
2 changed files with 28 additions and 15 deletions
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33
gcc/config/i386/i386.c
View File

@ -17991,21 +17991,24 @@ ix86_gimple_fold_builtin (gimple_stmt_iterator *gsi)
gcc_assert (n_args == 2);
arg0 = gimple_call_arg (stmt, 0);
arg1 = gimple_call_arg (stmt, 1);
{
location_t loc = gimple_location (stmt);
tree type = TREE_TYPE (arg0);
tree zero_vec = build_zero_cst (type);
tree minus_one_vec = build_minus_one_cst (type);
tree cmp_type = truth_type_for (type);
gimple_seq stmts = NULL;
tree cmp = gimple_build (&stmts, tcode, cmp_type, arg0, arg1);
gsi_insert_seq_before (gsi, stmts, GSI_SAME_STMT);
gimple* g = gimple_build_assign (gimple_call_lhs (stmt),
VEC_COND_EXPR, cmp,
minus_one_vec, zero_vec);
gimple_set_location (g, loc);
gsi_replace (gsi, g, false);
}
if (gimple_call_lhs (stmt))
{
location_t loc = gimple_location (stmt);
tree type = TREE_TYPE (arg0);
tree zero_vec = build_zero_cst (type);
tree minus_one_vec = build_minus_one_cst (type);
tree cmp_type = truth_type_for (type);
gimple_seq stmts = NULL;
tree cmp = gimple_build (&stmts, tcode, cmp_type, arg0, arg1);
gsi_insert_seq_before (gsi, stmts, GSI_SAME_STMT);
gimple* g = gimple_build_assign (gimple_call_lhs (stmt),
VEC_COND_EXPR, cmp,
minus_one_vec, zero_vec);
gimple_set_location (g, loc);
gsi_replace (gsi, g, false);
}
else
gsi_replace (gsi, gimple_build_nop (), false);
return true;
case IX86_BUILTIN_PSLLD:

10
gcc/testsuite/gcc.target/i386/pr100660.c Normal file
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@ -0,0 +1,10 @@
/* PR target/pr100660. */
/* { dg-do compile } */
/* { dg-options "-mavx2 -O" } */
typedef char v16qi __attribute__ ((vector_size (16)));
v16qi
f5 (v16qi a, v16qi b)
{
__builtin_ia32_pcmpgtb128 (a, b);
}