diff options
Diffstat (limited to 'toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106853.patch')
| -rw-r--r-- | toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106853.patch | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106853.patch b/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106853.patch new file mode 100644 index 0000000000..8c51c1d1f3 --- /dev/null +++ b/toolchain-layer/recipes-devtools/gcc/gcc-4.6/linaro/gcc-4.6-linaro-r106853.patch @@ -0,0 +1,69 @@ +2011-12-20 Ira Rosen <ira.rosen@linaro.org> + + Backport from mainline: + + 2011-11-29 Ira Rosen <ira.rosen@linaro.org> + + PR tree-optimization/51301 + gcc/ + * tree-vect-patterns.c (vect_recog_over_widening_pattern): Check that + the last statement doesn't convert to a bigger type than the original + type of the computation. + + gcc/testsuite/ + * gcc.dg/vect/pr51301.c: New test. + +=== added file 'gcc/testsuite/gcc.dg/vect/pr51301.c' +--- old/gcc/testsuite/gcc.dg/vect/pr51301.c 1970-01-01 00:00:00 +0000 ++++ new/gcc/testsuite/gcc.dg/vect/pr51301.c 2011-11-30 17:54:51 +0000 +@@ -0,0 +1,15 @@ ++/* { dg-do compile } */ ++ ++typedef signed char int8_t; ++typedef signed long long int64_t; ++int64_t ++f0a (int8_t * __restrict__ arg1) ++{ ++ int idx; ++ int64_t result = 0; ++ for (idx = 0; idx < 416; idx += 1) ++ result += arg1[idx] << (arg1[idx] == arg1[idx]); ++ return result; ++} ++ ++/* { dg-final { cleanup-tree-dump "vect" } } */ + +=== modified file 'gcc/tree-vect-patterns.c' +--- old/gcc/tree-vect-patterns.c 2011-11-27 12:17:31 +0000 ++++ new/gcc/tree-vect-patterns.c 2011-12-20 07:47:44 +0000 +@@ -1138,6 +1138,7 @@ + struct loop *loop = NULL; + bb_vec_info bb_vinfo; + stmt_vec_info stmt_vinfo; ++ tree type = NULL; + + stmt_vinfo = vinfo_for_stmt (stmt); + loop_vinfo = STMT_VINFO_LOOP_VINFO (stmt_vinfo); +@@ -1207,6 +1208,7 @@ + print_gimple_stmt (vect_dump, pattern_stmt, 0, TDF_SLIM); + } + ++ type = gimple_expr_type (stmt); + prev_stmt = stmt; + stmt = use_stmt; + +@@ -1222,9 +1224,11 @@ + { + use_lhs = gimple_assign_lhs (use_stmt); + use_type = TREE_TYPE (use_lhs); +- /* Support only type promotion or signedess change. */ ++ /* Support only type promotion or signedess change. Check that USE_TYPE ++ is not bigger than the original type. */ + if (!INTEGRAL_TYPE_P (use_type) +- || TYPE_PRECISION (new_type) > TYPE_PRECISION (use_type)) ++ || TYPE_PRECISION (new_type) > TYPE_PRECISION (use_type) ++ || TYPE_PRECISION (type) < TYPE_PRECISION (use_type)) + return NULL; + + if (TYPE_UNSIGNED (new_type) != TYPE_UNSIGNED (use_type) + |