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-rw-r--r--gcc/ChangeLog10
-rw-r--r--gcc/common/config/rs6000/rs6000-common.c1
-rw-r--r--gcc/config/rs6000/rs6000.c20
-rw-r--r--gcc/testsuite/ChangeLog13
-rw-r--r--gcc/testsuite/c-c++-common/tsan/thread_leak2.c4
-rw-r--r--gcc/testsuite/gcc.dg/pr59643.c3
-rw-r--r--gcc/testsuite/gcc.target/powerpc/loop_align.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/ppc-fma-1.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/ppc-fma-2.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/ppc-fma-3.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/pr78604.c2
-rw-r--r--gcc/testsuite/gcc.target/powerpc/small-loop-unroll.c13
13 files changed, 70 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4751148..9511081 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2019-10-25 Jiufu Guo <guojiufu@linux.ibm.com>
+
+ PR tree-optimization/88760
+ * config/rs6000/rs6000-common.c (rs6000_option_optimization_table):
+ Enable -funroll-loops for -O2 and above.
+ * config/rs6000/rs6000.c (rs6000_option_override_internal): Set
+ PARAM_MAX_UNROLL_TIMES to 2 and PARAM_MAX_UNROLLED_INSNS to 20, and
+ do not turn on web and rngreg implicitly, if the unroller is not
+ explicitly enabled.
+
2019-10-27 Jan Hubicka <hubicka@ucw.cz>
* ipa-prop.c (ipa_propagate_indirect_call_infos): Do not remove
diff --git a/gcc/common/config/rs6000/rs6000-common.c b/gcc/common/config/rs6000/rs6000-common.c
index 4b0c205..b947196 100644
--- a/gcc/common/config/rs6000/rs6000-common.c
+++ b/gcc/common/config/rs6000/rs6000-common.c
@@ -35,6 +35,7 @@ static const struct default_options rs6000_option_optimization_table[] =
{ OPT_LEVELS_ALL, OPT_fsplit_wide_types_early, NULL, 1 },
/* Enable -fsched-pressure for first pass instruction scheduling. */
{ OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
+ { OPT_LEVELS_2_PLUS, OPT_funroll_loops, NULL, 1 },
{ OPT_LEVELS_NONE, 0, NULL, 0 }
};
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 1399221..9ed5151 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4540,6 +4540,26 @@ rs6000_option_override_internal (bool global_init_p)
global_options.x_param_values,
global_options_set.x_param_values);
+ /* unroll very small loops 2 time if no -funroll-loops. */
+ if (!global_options_set.x_flag_unroll_loops
+ && !global_options_set.x_flag_unroll_all_loops)
+ {
+ maybe_set_param_value (PARAM_MAX_UNROLL_TIMES, 2,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+
+ maybe_set_param_value (PARAM_MAX_UNROLLED_INSNS, 20,
+ global_options.x_param_values,
+ global_options_set.x_param_values);
+
+ /* If fweb or frename-registers are not specificed in command-line,
+ do not turn them on implicitly. */
+ if (!global_options_set.x_flag_web)
+ global_options.x_flag_web = 0;
+ if (!global_options_set.x_flag_rename_registers)
+ global_options.x_flag_rename_registers = 0;
+ }
+
/* If using typedef char *va_list, signal that
__builtin_va_start (&ap, 0) can be optimized to
ap = __builtin_next_arg (0). */
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 86c2da1..f9f5bb7 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,16 @@
+2019-10-25 Jiufu Guo <guojiufu@linux.ibm.com>
+
+ PR tree-optimization/88760
+ * gcc.target/powerpc/small-loop-unroll.c: New test.
+ * c-c++-common/tsan/thread_leak2.c: Update test.
+ * gcc.dg/pr59643.c: Update test.
+ * gcc.target/powerpc/loop_align.c: Update test.
+ * gcc.target/powerpc/ppc-fma-1.c: Update test.
+ * gcc.target/powerpc/ppc-fma-2.c: Update test.
+ * gcc.target/powerpc/ppc-fma-3.c: Update test.
+ * gcc.target/powerpc/ppc-fma-4.c: Update test.
+ * gcc.target/powerpc/pr78604.c: Update test.
+
2019-10-27 Andreas Tobler <andreast@gcc.gnu.org>
* gcc.c-torture/execute/fprintf-2.c: Silence a Free/NetBSD libc warning.
diff --git a/gcc/testsuite/c-c++-common/tsan/thread_leak2.c b/gcc/testsuite/c-c++-common/tsan/thread_leak2.c
index c9b8046..082f2aa 100644
--- a/gcc/testsuite/c-c++-common/tsan/thread_leak2.c
+++ b/gcc/testsuite/c-c++-common/tsan/thread_leak2.c
@@ -1,5 +1,9 @@
/* { dg-shouldfail "tsan" } */
+/* { dg-additional-options "-fno-unroll-loops" { target { powerpc*-*-* } } } */
+/* -fno-unroll-loops help to avoid ThreadSanitizer reporting multi-times
+ message for pthread_create at difference calling addresses. */
+
#include <pthread.h>
#include <unistd.h>
diff --git a/gcc/testsuite/gcc.dg/pr59643.c b/gcc/testsuite/gcc.dg/pr59643.c
index de78d60..4446f6e 100644
--- a/gcc/testsuite/gcc.dg/pr59643.c
+++ b/gcc/testsuite/gcc.dg/pr59643.c
@@ -1,6 +1,9 @@
/* PR tree-optimization/59643 */
/* { dg-do compile } */
/* { dg-options "-O3 -fdump-tree-pcom-details" } */
+/* { dg-additional-options "--param max-unrolled-insns=400" { target { powerpc*-*-* } } } */
+/* Implicit threashold of max-unrolled-insn on ppc at O3 is too small for the
+ loop of this case. */
void
foo (double *a, double *b, double *c, double d, double e, int n)
diff --git a/gcc/testsuite/gcc.target/powerpc/loop_align.c b/gcc/testsuite/gcc.target/powerpc/loop_align.c
index ebe3782..ef67f77 100644
--- a/gcc/testsuite/gcc.target/powerpc/loop_align.c
+++ b/gcc/testsuite/gcc.target/powerpc/loop_align.c
@@ -1,6 +1,6 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* powerpc-ibm-aix* } } */
-/* { dg-options "-O2 -mdejagnu-cpu=power7 -falign-functions=16" } */
+/* { dg-options "-O2 -mdejagnu-cpu=power7 -falign-functions=16 -fno-unroll-loops" } */
/* { dg-final { scan-assembler ".p2align 5" } } */
void f(double *a, double *b, double *c, unsigned long n) {
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fma-1.c b/gcc/testsuite/gcc.target/powerpc/ppc-fma-1.c
index b4945e6..2a5b92c 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fma-1.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fma-1.c
@@ -1,7 +1,7 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_vsx_ok } */
-/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power7 -ffast-math" } */
+/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power7 -ffast-math -fno-unroll-loops" } */
/* { dg-final { scan-assembler-times "xvmadd" 4 } } */
/* { dg-final { scan-assembler-times "xsmadd\|fmadd\ " 2 } } */
/* { dg-final { scan-assembler-times "fmadds" 2 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fma-2.c b/gcc/testsuite/gcc.target/powerpc/ppc-fma-2.c
index 5ed630a..bf2c67f 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fma-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fma-2.c
@@ -1,7 +1,7 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_vsx_ok } */
-/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power7 -ffast-math -ffp-contract=off" } */
+/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power7 -ffast-math -ffp-contract=off -fno-unroll-loops" } */
/* { dg-final { scan-assembler-times "xvmadd" 2 } } */
/* { dg-final { scan-assembler-times "xsmadd\|fmadd\ " 1 } } */
/* { dg-final { scan-assembler-times "fmadds" 1 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fma-3.c b/gcc/testsuite/gcc.target/powerpc/ppc-fma-3.c
index ef252b3..8608116 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fma-3.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fma-3.c
@@ -2,7 +2,7 @@
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_altivec_ok } */
/* { dg-require-effective-target powerpc_fprs } */
-/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power6 -maltivec -ffast-math" } */
+/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power6 -maltivec -ffast-math -fno-unroll-loops" } */
/* { dg-final { scan-assembler-times "vmaddfp" 2 } } */
/* { dg-final { scan-assembler-times "fmadd " 2 } } */
/* { dg-final { scan-assembler-times "fmadds" 2 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c b/gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c
index c2eaf1a..291c2ee 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c
@@ -2,7 +2,7 @@
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_altivec_ok } */
/* { dg-require-effective-target powerpc_fprs } */
-/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power6 -maltivec -ffast-math -ffp-contract=off" } */
+/* { dg-options "-O3 -ftree-vectorize -mdejagnu-cpu=power6 -maltivec -ffast-math -ffp-contract=off -fno-unroll-loops" } */
/* { dg-final { scan-assembler-times "vmaddfp" 1 } } */
/* { dg-final { scan-assembler-times "fmadd " 1 } } */
/* { dg-final { scan-assembler-times "fmadds" 1 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/pr78604.c b/gcc/testsuite/gcc.target/powerpc/pr78604.c
index 76d8945..35bfdb3 100644
--- a/gcc/testsuite/gcc.target/powerpc/pr78604.c
+++ b/gcc/testsuite/gcc.target/powerpc/pr78604.c
@@ -1,7 +1,7 @@
/* { dg-do compile { target { powerpc*-*-* } } } */
/* { dg-skip-if "" { powerpc*-*-darwin* } } */
/* { dg-require-effective-target powerpc_p8vector_ok } */
-/* { dg-options "-mdejagnu-cpu=power8 -O2 -ftree-vectorize -fdump-tree-vect-details" } */
+/* { dg-options "-mdejagnu-cpu=power8 -O2 -ftree-vectorize -fdump-tree-vect-details -fno-unroll-loops" } */
#ifndef SIZE
#define SIZE 1024
diff --git a/gcc/testsuite/gcc.target/powerpc/small-loop-unroll.c b/gcc/testsuite/gcc.target/powerpc/small-loop-unroll.c
new file mode 100644
index 0000000..fec5ae9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/small-loop-unroll.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-rtl-loop2_unroll" } */
+
+void __attribute__ ((noinline)) foo(int n, int *arr)
+{
+ int i;
+ for (i = 0; i < n; i++)
+ arr[i] = arr[i] - 10;
+}
+/* { dg-final { scan-rtl-dump-times "Unrolled loop 1 times" 1 "loop2_unroll" } } */
+/* { dg-final { scan-assembler-times {\mlwz\M} 3 } } */
+/* { dg-final { scan-assembler-times {\mstw\M} 3 } } */
+
generated by cgit v1.1 at 2025-08-05 09:02:31 +0000