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| author | Jakub Jelinek <jakub@redhat.com> | 2020-01-10 22:10:03 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2020-01-10 22:10:03 +0100 |
| commit | 974bb8a4dcbf51a153ab72da91a7256a296e7fa1 (patch) | |
| tree | db1729b6b79ee66541b02773d9485c61b8a624ce /gcc | |
| parent | a29a9962ea060951c35b301a1cf708aa65ffc582 (diff) | |
| download | gcc-974bb8a4dcbf51a153ab72da91a7256a296e7fa1.zip gcc-974bb8a4dcbf51a153ab72da91a7256a296e7fa1.tar.gz gcc-974bb8a4dcbf51a153ab72da91a7256a296e7fa1.tar.bz2 | |
re PR tree-optimization/90838 (Detect table-based ctz implementation)
PR tree-optimization/90838
* tree-ssa-forwprop.c (simplify_count_trailing_zeroes): Use
SCALAR_INT_TYPE_MODE instead of TYPE_MODE as operand of
CTZ_DEFINED_VALUE_AT_ZERO.
From-SVN: r280140
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 3 |
2 files changed, 9 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 24b5c97..5471c9f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2020-01-10 Jakub Jelinek <jakub@redhat.com> + + PR tree-optimization/90838 + * tree-ssa-forwprop.c (simplify_count_trailing_zeroes): Use + SCALAR_INT_TYPE_MODE instead of TYPE_MODE as operand of + CTZ_DEFINED_VALUE_AT_ZERO. + 2020-01-10 Vladimir Makarov <vmakarov@redhat.com> PR inline-asm/93027 diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index aced6eb..aac31d0 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -1922,7 +1922,8 @@ simplify_count_trailing_zeroes (gimple_stmt_iterator *gsi) tree type = TREE_TYPE (res_ops[0]); HOST_WIDE_INT ctzval; HOST_WIDE_INT type_size = tree_to_shwi (TYPE_SIZE (type)); - bool zero_ok = CTZ_DEFINED_VALUE_AT_ZERO (TYPE_MODE (type), ctzval) == 2; + scalar_int_mode mode = SCALAR_INT_TYPE_MODE (type); + bool zero_ok = CTZ_DEFINED_VALUE_AT_ZERO (mode, ctzval) == 2; /* Skip if there is no value defined at zero, or if we can't easily return the correct value for zero. */ |