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| author | Richard Biener <rguenther@suse.de> | 2022-06-20 13:40:50 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2022-06-20 15:01:57 +0200 |
| commit | 713f2fd923442b1be620a44240ddf786ae0ab476 (patch) | |
| tree | f2b59bec9334fd4af01d51744f815282cfd353b1 | |
| parent | 86882d9feb6a534325d7162216696266898e36d0 (diff) | |
| download | gcc-713f2fd923442b1be620a44240ddf786ae0ab476.zip gcc-713f2fd923442b1be620a44240ddf786ae0ab476.tar.gz gcc-713f2fd923442b1be620a44240ddf786ae0ab476.tar.bz2 | |
middle-end/106027 - fix types in needle folding
The fold_to_nonsharp_ineq_using_bound folding ends up creating invalid
typed IL which confuses later foldings. The following fixes that.
2022-06-20 Richard Biener <rguenther@suse.de>
PR middle-end/106027
* fold-const.cc (fold_to_nonsharp_ineq_using_bound): Use the
type of the prevailing comparison for the new comparison type.
(fold_binary_loc): Use proper types for the A < X && A + 1 > Y
to A < X && A >= Y folding.
* gcc.dg/pr106027.c: New testcase.
| -rw-r--r-- | gcc/fold-const.cc | 10 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr106027.c | 8 |
2 files changed, 15 insertions, 3 deletions
diff --git a/gcc/fold-const.cc b/gcc/fold-const.cc index fbdf3c8..99021a8 100644 --- a/gcc/fold-const.cc +++ b/gcc/fold-const.cc @@ -7530,7 +7530,7 @@ tree_swap_operands_p (const_tree arg0, const_tree arg1) static tree fold_to_nonsharp_ineq_using_bound (location_t loc, tree ineq, tree bound) { - tree a, typea, type = TREE_TYPE (ineq), a1, diff, y; + tree a, typea, type = TREE_TYPE (bound), a1, diff, y; if (TREE_CODE (bound) == LT_EXPR) a = TREE_OPERAND (bound, 0); @@ -12037,11 +12037,15 @@ fold_binary_loc (location_t loc, enum tree_code code, tree type, { tem = fold_to_nonsharp_ineq_using_bound (loc, arg0, arg1); if (tem && !operand_equal_p (tem, arg0, 0)) - return fold_build2_loc (loc, code, type, tem, arg1); + return fold_convert (type, + fold_build2_loc (loc, code, TREE_TYPE (arg1), + tem, arg1)); tem = fold_to_nonsharp_ineq_using_bound (loc, arg1, arg0); if (tem && !operand_equal_p (tem, arg1, 0)) - return fold_build2_loc (loc, code, type, arg0, tem); + return fold_convert (type, + fold_build2_loc (loc, code, TREE_TYPE (arg0), + arg0, tem)); } if ((tem = fold_truth_andor (loc, code, type, arg0, arg1, op0, op1)) diff --git a/gcc/testsuite/gcc.dg/pr106027.c b/gcc/testsuite/gcc.dg/pr106027.c new file mode 100644 index 0000000..735205f --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr106027.c @@ -0,0 +1,8 @@ +/* { dg-do compile } */ +/* { dg-options "-O" } */ + +int +foo (unsigned int x, int y) +{ + return x <= (((y != y) < 0) ? y < 1 : 0); +} |