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File _service:tar_scm:0024-StructReorderFields-Add-lto-and-whole-program-gate.patch of Package gcc
From 0ee0f0ebeb098787cb9698887c237606b6ab10c6 Mon Sep 17 00:00:00 2001 From: huangxiaoquan <huangxiaoquan1@huawei.com> Date: Wed, 1 Sep 2021 17:07:22 +0800 Subject: [PATCH 24/24] [StructReorderFields] Add lto and whole-program gate Only enable struct reorder fields optimizations in lto or whole-program. This prevents some .c files from being struct reorder fields optimized while some of them are not optimized during project compilation. diff --git a/gcc/ipa-struct-reorg/ipa-struct-reorg.c b/gcc/ipa-struct-reorg/ipa-struct-reorg.c index b0d4fe80797..2bf41e0d83b 100644 --- a/gcc/ipa-struct-reorg/ipa-struct-reorg.c +++ b/gcc/ipa-struct-reorg/ipa-struct-reorg.c @@ -6655,7 +6655,9 @@ pass_ipa_struct_reorg::gate (function *) && flag_lto_partition == LTO_PARTITION_ONE /* Only enable struct optimizations in C since other languages' grammar forbid. */ - && lang_c_p ()); + && lang_c_p () + /* Only enable struct optimizations in lto or whole_program. */ + && (in_lto_p || flag_whole_program)); } const pass_data pass_data_ipa_reorder_fields = @@ -6699,7 +6701,9 @@ pass_ipa_reorder_fields::gate (function *) && flag_lto_partition == LTO_PARTITION_ONE /* Only enable struct optimizations in C since other languages' grammar forbid. */ - && lang_c_p ()); + && lang_c_p () + /* Only enable struct optimizations in lto or whole_program. */ + && (in_lto_p || flag_whole_program)); } } // anon namespace diff --git a/gcc/testsuite/gcc.dg/struct/struct_reorg-1.c b/gcc/testsuite/gcc.dg/struct/struct_reorg-1.c index 6565fe8dd63..23444fe8b0d 100644 --- a/gcc/testsuite/gcc.dg/struct/struct_reorg-1.c +++ b/gcc/testsuite/gcc.dg/struct/struct_reorg-1.c @@ -1,5 +1,5 @@ // { dg-do compile } -// { dg-options "-O3 -flto-partition=one -fipa-struct-reorg -fdump-ipa-all" } +// { dg-options "-O3 -flto-partition=one -fipa-struct-reorg -fdump-ipa-all -fwhole-program" } struct a { @@ -21,4 +21,10 @@ int g(void) return b->t; } +int main() +{ + f (); + return g (); +} + /* { dg-final { scan-ipa-dump "No structures to transform." "struct_reorg" } } */ diff --git a/gcc/testsuite/gcc.dg/struct/struct_reorg-3.c b/gcc/testsuite/gcc.dg/struct/struct_reorg-3.c index 5864ad46fd3..2d1f95c9935 100644 --- a/gcc/testsuite/gcc.dg/struct/struct_reorg-3.c +++ b/gcc/testsuite/gcc.dg/struct/struct_reorg-3.c @@ -1,5 +1,5 @@ // { dg-do compile } -// { dg-options "-O3 -flto-partition=one -fipa-struct-reorg -fdump-ipa-all" } +// { dg-options "-O3 -flto-partition=one -fipa-struct-reorg -fdump-ipa-all -fwhole-program" } #include <stdlib.h> typedef struct { @@ -10,7 +10,7 @@ typedef struct { compile_stack_elt_t *stack; unsigned size; } compile_stack_type; -void f (const char *p, const char *pend, int c) +__attribute__((noinline)) void f (const char *p, const char *pend, int c) { compile_stack_type compile_stack; while (p != pend) @@ -20,4 +20,9 @@ void f (const char *p, const char *pend, int c) * sizeof (compile_stack_elt_t)); } +int main() +{ + f (NULL, NULL, 1); +} + /* { dg-final { scan-ipa-dump "Number of structures to transform is 1" "struct_reorg" } } */ -- 2.21.0.windows.1
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