diff options
Diffstat (limited to 'sys-devel/gcc/files')
| -rw-r--r-- | sys-devel/gcc/files/gcc-15.0.0_pre20240922-middle-end-check-explicitly-for-external-or-constant.patch | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/sys-devel/gcc/files/gcc-15.0.0_pre20240922-middle-end-check-explicitly-for-external-or-constant.patch b/sys-devel/gcc/files/gcc-15.0.0_pre20240922-middle-end-check-explicitly-for-external-or-constant.patch new file mode 100644 index 000000000000..6dcc1a46c96a --- /dev/null +++ b/sys-devel/gcc/files/gcc-15.0.0_pre20240922-middle-end-check-explicitly-for-external-or-constant.patch @@ -0,0 +1,93 @@ +https://inbox.sourceware.org/gcc-patches/patch-18806-tamar@arm.com/T/#u +https://gcc.gnu.org/PR116817 + +From 9a5d1eb943dcaf26551b534eb62cbf1dd8443335 Mon Sep 17 00:00:00 2001 +Message-ID: <9a5d1eb943dcaf26551b534eb62cbf1dd8443335.1727104663.git.sam@gentoo.org> +From: Tamar Christina <tamar.christina@arm.com> +Date: Mon, 23 Sep 2024 15:29:52 +0100 +Subject: [PATCH] middle-end: check explicitly for external or constants when + checking for loop invariant [PR116817] + +Hi All, + +The previous check if a value was external was checking +!vect_get_internal_def (vinfo, var) but this of course isn't completely right +as they could reductions etc. + +This changes the check to just explicitly look at externals and constants. +Note that reductions remain unhandled here, but we don't support codegen of +boolean reductions today anyway. + +So at the time we do then this would have the be handled as well in lowering. + +Bootstrapped Regtested on aarch64-none-linux-gnu and no issues. + +Ok for master? + +Thanks, +Tamar + +gcc/ChangeLog: + + PR tree-optimization/116817 + * tree-vect-patterns.cc (vect_recog_bool_pattern): Check for const or + externals. + +gcc/testsuite/ChangeLog: + +PR tree-optimization/116817 + * g++.dg/vect/pr116817.cc: New test. +--- + gcc/testsuite/g++.dg/vect/pr116817.cc | 16 ++++++++++++++++ + gcc/tree-vect-patterns.cc | 5 ++++- + 2 files changed, 20 insertions(+), 1 deletion(-) + create mode 100644 gcc/testsuite/g++.dg/vect/pr116817.cc + +diff --git a/gcc/testsuite/g++.dg/vect/pr116817.cc b/gcc/testsuite/g++.dg/vect/pr116817.cc +new file mode 100644 +index 00000000000..7e28982fb13 +--- /dev/null ++++ b/gcc/testsuite/g++.dg/vect/pr116817.cc +@@ -0,0 +1,16 @@ ++/* { dg-do compile } */ ++/* { dg-additional-options "-O3" } */ ++ ++int main_ulData0; ++unsigned *main_pSrcBuffer; ++int main(void) { ++ int iSrc = 0; ++ bool bData0; ++ for (; iSrc < 4; iSrc++) { ++ if (bData0) ++ main_pSrcBuffer[iSrc] = main_ulData0; ++ else ++ main_pSrcBuffer[iSrc] = 0; ++ bData0 = !bData0; ++ } ++} +diff --git a/gcc/tree-vect-patterns.cc b/gcc/tree-vect-patterns.cc +index e7e877dd2ad..b913d6de003 100644 +--- a/gcc/tree-vect-patterns.cc ++++ b/gcc/tree-vect-patterns.cc +@@ -6062,12 +6062,15 @@ vect_recog_bool_pattern (vec_info *vinfo, + if (get_vectype_for_scalar_type (vinfo, type) == NULL_TREE) + return NULL; + ++ stmt_vec_info var_def_info = vinfo->lookup_def (var); + if (check_bool_pattern (var, vinfo, bool_stmts)) + var = adjust_bool_stmts (vinfo, bool_stmts, type, stmt_vinfo); + else if (integer_type_for_mask (var, vinfo)) + return NULL; + else if (TREE_CODE (TREE_TYPE (var)) == BOOLEAN_TYPE +- && !vect_get_internal_def (vinfo, var)) ++ && var_def_info ++ && (STMT_VINFO_DEF_TYPE (var_def_info) == vect_external_def ++ || STMT_VINFO_DEF_TYPE (var_def_info) == vect_constant_def)) + { + /* If the condition is already a boolean then manually convert it to a + mask of the given integer type but don't set a vectype. */ + +base-commit: 358db2e3ed4acf44282d1d9ebbc4a1a3b6e38d21 +-- +2.46.1 + |