diff options
| author | Jakub Jelinek <jakub@redhat.com> | 2024-01-17 13:55:50 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2024-01-17 13:55:50 +0100 |
| commit | 2fb78d431ff3c05997ef31837d6eb319d84a4239 (patch) | |
| tree | ea3fa4e0f113e7c5dac39b1ee08fc75ad126f5fe | |
| parent | 2c74d5c0a0f21ae1d0c195ca0d81a3d1032f27e3 (diff) | |
| download | gcc-2fb78d431ff3c05997ef31837d6eb319d84a4239.zip gcc-2fb78d431ff3c05997ef31837d6eb319d84a4239.tar.gz gcc-2fb78d431ff3c05997ef31837d6eb319d84a4239.tar.bz2 | |
lower-bitint: Fix up VIEW_CONVERT_EXPR handling [PR113408]
Unlike NOP_EXPR/CONVERT_EXPR which are GIMPLE_UNARY_RHS, VIEW_CONVERT_EXPR
is GIMPLE_SINGLE_RHS and so gimple_assign_rhs1 contains the operand wrapped
in VIEW_CONVERT_EXPR tree.
So, to handle it like other casts we need to look through it.
2024-01-17 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/113408
* gimple-lower-bitint.cc (bitint_large_huge::handle_stmt): For
VIEW_CONVERT_EXPR, pass TREE_OPERAND (rhs1, 0) rather than rhs1
to handle_cast.
* gcc.dg/bitint-71.c: New test.
| -rw-r--r-- | gcc/gimple-lower-bitint.cc | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/bitint-71.c | 18 |
2 files changed, 22 insertions, 1 deletions
diff --git a/gcc/gimple-lower-bitint.cc b/gcc/gimple-lower-bitint.cc index 672a9a3..d3d1135 100644 --- a/gcc/gimple-lower-bitint.cc +++ b/gcc/gimple-lower-bitint.cc @@ -1975,9 +1975,12 @@ bitint_large_huge::handle_stmt (gimple *stmt, tree idx) case INTEGER_CST: return handle_operand (gimple_assign_rhs1 (stmt), idx); CASE_CONVERT: - case VIEW_CONVERT_EXPR: return handle_cast (TREE_TYPE (gimple_assign_lhs (stmt)), gimple_assign_rhs1 (stmt), idx); + case VIEW_CONVERT_EXPR: + return handle_cast (TREE_TYPE (gimple_assign_lhs (stmt)), + TREE_OPERAND (gimple_assign_rhs1 (stmt), 0), + idx); default: break; } diff --git a/gcc/testsuite/gcc.dg/bitint-71.c b/gcc/testsuite/gcc.dg/bitint-71.c new file mode 100644 index 0000000..f7ff871 --- /dev/null +++ b/gcc/testsuite/gcc.dg/bitint-71.c @@ -0,0 +1,18 @@ +/* PR tree-optimization/113408 */ +/* { dg-do compile { target bitint } } */ +/* { dg-options "-std=c23 -O2" } */ + +#if __BITINT_MAXWIDTH__ >= 713 +struct A { _BitInt(713) b; } g; +#else +struct A { _BitInt(49) b; } g; +#endif +int f; + +void +foo (void) +{ + struct A j = g; + if (j.b) + f = 0; +} |