rs6000.c (context.h): New include.

[gcc]

2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000.c (context.h): New include.
	(tree-pass.h): Likewise.
	(make_pass_analyze_swaps): New decl.
	(rs6000_option_override): Register pass_analyze_swaps.
	(swap_web_entry): New subsclass of web_entry_base (df.h).
	(special_handling_values): New enum.
	(union_defs): New function.
	(union_uses): Likewise.
	(insn_is_load_p): Likewise.
	(insn_is_store_p): Likewise.
	(insn_is_swap_p): Likewise.
	(rtx_is_swappable_p): Likewise.
	(insn_is_swappable_p): Likewise.
	(chain_purpose): New enum.
	(chain_contains_only_swaps): New function.
	(mark_swaps_for_removal): Likewise.
	(swap_const_vector_halves): Likewise.
	(adjust_subreg_index): Likewise.
	(permute_load): Likewise.
	(permute_store): Likewise.
	(handle_special_swappables): Likewise.
	(replace_swap_with_copy): Likewise.
	(dump_swap_insn_table): Likewise.
	(rs6000_analyze_swaps): Likewise.
	(pass_data_analyze_swaps): New pass_data.
	(pass_analyze_swaps): New rtl_opt_pass.
	(make_pass_analyze_swaps): New function.
	* config/rs6000/rs6000.opt (moptimize-swaps): New option.

[gcc/testsuite]

2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/swaps-p8-1.c: New test.
	* gcc.target/powerpc/swaps-p8-2.c: New test.
	* gcc.target/powerpc/swaps-p8-3.c: New test.
	* gcc.target/powerpc/swaps-p8-4.c: New test.
	* gcc.target/powerpc/swaps-p8-5.c: New test.
	* gcc.target/powerpc/swaps-p8-6.c: New test.
	* gcc.target/powerpc/swaps-p8-7.c: New test.
	* gcc.target/powerpc/swaps-p8-8.c: New test.
	* gcc.target/powerpc/swaps-p8-9.c: New test.
	* gcc.target/powerpc/swaps-p8-10.c: New test.
	* gcc.target/powerpc/swaps-p8-11.c: New test.
	* gcc.target/powerpc/swaps-p8-12.c: New test.

From-SVN: r214254

gcc/ChangeLog

+2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+	* config/rs6000/rs6000.c (context.h): New include.
+	(tree-pass.h): Likewise.
+	(make_pass_analyze_swaps): New decl.
+	(rs6000_option_override): Register pass_analyze_swaps.
+	(swap_web_entry): New subsclass of web_entry_base (df.h).
+	(special_handling_values): New enum.
+	(union_defs): New function.
+	(union_uses): Likewise.
+	(insn_is_load_p): Likewise.
+	(insn_is_store_p): Likewise.
+	(insn_is_swap_p): Likewise.
+	(rtx_is_swappable_p): Likewise.
+	(insn_is_swappable_p): Likewise.
+	(chain_purpose): New enum.
+	(chain_contains_only_swaps): New function.
+	(mark_swaps_for_removal): Likewise.
+	(swap_const_vector_halves): Likewise.
+	(adjust_subreg_index): Likewise.
+	(permute_load): Likewise.
+	(permute_store): Likewise.
+	(handle_special_swappables): Likewise.
+	(replace_swap_with_copy): Likewise.
+	(dump_swap_insn_table): Likewise.
+	(rs6000_analyze_swaps): Likewise.
+	(pass_data_analyze_swaps): New pass_data.
+	(pass_analyze_swaps): New rtl_opt_pass.
+	(make_pass_analyze_swaps): New function.
+	* config/rs6000/rs6000.opt (moptimize-swaps): New option.
+
 2014-08-21  David Malcolm  <dmalcolm@redhat.com>
 
 	* sel-sched-ir.h (create_insn_rtx_from_pattern): Strengthen return

gcc/config/rs6000/rs6000.opt

@@ -588,3 +588,7 @@ Allow double variables in upper registers with -mcpu=power7 or -mvsx
 mupper-regs-sf
 Target Undocumented Mask(UPPER_REGS_SF) Var(rs6000_isa_flags)
 Allow float variables in upper registers with -mcpu=power8 or -mp8-vector
+
+moptimize-swaps
+Target Undocumented Var(rs6000_optimize_swaps) Init(1) Save
+Analyze and remove doubleword swaps from VSX computations.

gcc/testsuite/ChangeLog

+2014-08-20  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
+
+	* gcc.target/powerpc/swaps-p8-1.c: New test.
+	* gcc.target/powerpc/swaps-p8-2.c: New test.
+	* gcc.target/powerpc/swaps-p8-3.c: New test.
+	* gcc.target/powerpc/swaps-p8-4.c: New test.
+	* gcc.target/powerpc/swaps-p8-5.c: New test.
+	* gcc.target/powerpc/swaps-p8-6.c: New test.
+	* gcc.target/powerpc/swaps-p8-7.c: New test.
+	* gcc.target/powerpc/swaps-p8-8.c: New test.
+	* gcc.target/powerpc/swaps-p8-9.c: New test.
+	* gcc.target/powerpc/swaps-p8-10.c: New test.
+	* gcc.target/powerpc/swaps-p8-11.c: New test.
+	* gcc.target/powerpc/swaps-p8-12.c: New test.
+
 2014-08-20  Jan Hubicka  <hubicka@ucw.cz>
 
 	* g++.dg/ipa/devirt-37.C: Fix testcase.

gcc/testsuite/gcc.target/powerpc/swaps-p8-1.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+void abort();
+
+#define N 16
+
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[] __attribute__((aligned(16)))
+  = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
+signed char cc[] __attribute__((aligned(16)))
+  = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+int main ()
+{
+  signed char cd[] = {7, 6, 4, 3, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5};
+  int i;
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != cd[i])
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-10.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = ((cb[i] + cc[i]) * cd[i]) >> 3;
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i % 2 ? 1 : -1;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (i % 2 == 1 && ca[i] != (-2 * i - 1955) >> 3)
+      abort ();
+    else if (i % 2 == 0 && ca[i] != (1955 + 2 * i) >> 3)
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-11.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+#include <altivec.h>
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+int hey;
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  vector int va, vb, vc, vd, tmp;
+  vector unsigned int threes = vec_splat_u32(3);
+  for (i = 0; i < N; i+=4) {
+    vb = vec_vsx_ld (0, &cb[i]);
+    vc = vec_vsx_ld (0, &cc[i]);
+    vd = vec_vsx_ld (0, &cd[i]);
+    tmp = vec_add (vb, vc);
+    tmp = vec_sub (tmp, vd);
+    tmp = vec_sra (tmp, threes);
+    hey = tmp[3];
+    vec_vsx_st (tmp, 0, &ca[i]);
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i + 14;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != (-3 * i - 1969) >> 3)
+      abort ();
+  if (hey != ca[N-1])
+    abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-12.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+#include "altivec.h"
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+int hey;
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  vector int va, vb, vc, vd, tmp;
+  vector unsigned int threes = vec_splat_u32(3);
+  for (i = 0; i < N; i+=4) {
+    vb = vec_vsx_ld (0, &cb[i]);
+    vc = vec_vsx_ld (0, &cc[i]);
+    vd = vec_vsx_ld (0, &cd[i]);
+    tmp = vec_add (vb, vc);
+    tmp = vec_sub (tmp, vd);
+    tmp = vec_sra (tmp, threes);
+    hey = tmp[3];
+    vec_vsx_st (tmp, 0, &ca[i]);
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i + 14;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != (-3 * i - 1969) >> 3)
+      abort ();
+  if (hey != ca[N-1])
+    abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-2.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+void abort ();
+
+#define N 256
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[N] __attribute__((aligned(16)));
+signed char cc[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = i - 128;
+    cc[i] = i/2 - 64;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != i - i/2 - 64)
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-3.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+void abort ();
+
+#define N 4096
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[N] __attribute__((aligned(16)));
+signed char cc[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i, ii;
+  for (i = 0, ii = 0; i < N; ++i, ii = (ii + 1) % 128) {
+    cb[i] = ii - 128;
+    cc[i] = ii/2 - 64;
+  }
+}
+
+int main ()
+{
+  int i, ii;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i) {
+    ii = i % 128;
+    if (ca[i] != ii - ii/2 - 64)
+      abort ();
+  }
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-4.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = (cb[i] + cc[i]) * cd[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i % 2 ? 1 : -1;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (i % 2 == 1 && ca[i] != -2 * i - 1955)
+      abort ();
+    else if (i % 2 == 0 && ca[i] != 1955 + 2 * i)
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-5.c

+/* { dg-do compile { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+/* { dg-final { scan-assembler "lxvd2x" } } */
+/* { dg-final { scan-assembler "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "xxpermdi" } } */
+
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = ((cb[i] + cc[i]) * cd[i]) >> 3;
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i % 2 ? 1 : -1;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (i % 2 == 1 && ca[i] != (-2 * i - 1955) >> 3)
+      abort ();
+    else if (i % 2 == 0 && ca[i] != (1955 + 2 * i) >> 3)
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-6.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+void abort();
+
+#define N 16
+
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[] __attribute__((aligned(16)))
+  = {8, 7, 6, 5, 4, 3, 2,  1,  0, -1, -2, -3, -4, -5, -6, -7};
+signed char cc[] __attribute__((aligned(16)))
+  = {1, 1, 2, 2, 3, 3, 2,  2,  1,  1,  0,  0, -1, -1, -2, -2};
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+int main ()
+{
+  signed char cd[] = {7, 6, 4, 3, 1, 0, 0, -1, -1, -2, -2, -3, -3, -4, -4, -5};
+  int i;
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != cd[i])
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-7.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+void abort ();
+
+#define N 256
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[N] __attribute__((aligned(16)));
+signed char cc[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = i - 128;
+    cc[i] = i/2 - 64;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (ca[i] != i - i/2 - 64)
+      abort ();
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-8.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+void abort ();
+
+#define N 4096
+signed char ca[N] __attribute__((aligned(16)));
+signed char cb[N] __attribute__((aligned(16)));
+signed char cc[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = cb[i] - cc[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i, ii;
+  for (i = 0, ii = 0; i < N; ++i, ii = (ii + 1) % 128) {
+    cb[i] = ii - 128;
+    cc[i] = ii/2 - 64;
+  }
+}
+
+int main ()
+{
+  int i, ii;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i) {
+    ii = i % 128;
+    if (ca[i] != ii - ii/2 - 64)
+      abort ();
+  }
+  return 0;
+}

gcc/testsuite/gcc.target/powerpc/swaps-p8-9.c

+/* { dg-do run { target { powerpc64le-*-* } } } */
+/* { dg-options "-mcpu=power8 -O3" } */
+
+void abort ();
+
+#define N 4096
+int ca[N] __attribute__((aligned(16)));
+int cb[N] __attribute__((aligned(16)));
+int cc[N] __attribute__((aligned(16)));
+int cd[N] __attribute__((aligned(16)));
+
+__attribute__((noinline)) void foo ()
+{
+  int i;
+  for (i = 0; i < N; i++) {
+    ca[i] = (cb[i] + cc[i]) * cd[i];
+  }
+}
+
+__attribute__((noinline)) void init ()
+{
+  int i;
+  for (i = 0; i < N; ++i) {
+    cb[i] = 3 * i - 2048;
+    cc[i] = -5 * i + 93;
+    cd[i] = i % 2 ? 1 : -1;
+  }
+}
+
+int main ()
+{
+  int i;
+  init ();
+  foo ();
+  for (i = 0; i < N; ++i)
+    if (i % 2 == 1 && ca[i] != -2 * i - 1955)
+      abort ();
+    else if (i % 2 == 0 && ca[i] != 1955 + 2 * i)
+      abort ();
+  return 0;
+}