re PR target/53199 (__builtin_bswap64 and __builtin_bswap32 generate errors if -mcpu...

[gcc]
2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/53199
	* config/rs6000/rs6000.md (bswapdi splitters): If
	-mavoid-indexed-addresses (or -mcpu=power6 which sets it by
	default) is used, generate an alternate sequence that does not
	depend on using indexed addressing.

[gcc/testsuite]
2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/53199
	* gcc.target/powwerpc/pr53199.c: New file.

From-SVN: r187133

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7db206adc22d3be928c2e50fb6c740b7dd4246d2..8b13279ea97a8626720352211d7cb156874b5de6 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+       Backport from the mainline
+       2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+       PR target/53199
+       * config/rs6000/rs6000.md (bswapdi splitters): If
+       -mavoid-indexed-addresses (or -mcpu=power6 which sets it by
+       default) is used, generate an alternate sequence that does not
+       depend on using indexed addressing.
+
 2012-04-30  Uros Bizjak  <ubizjak@gmail.com>
 
        Backport from mainline

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 16be86c27a4f53bd638624bc72a3fd574cc010d6..7befb56a378c89de50458d6bb6972da5c1b925a4 100644 (file)
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -2524,7 +2524,18 @@
   if (GET_CODE (addr1) == PLUS)
     {
       emit_insn (gen_add3_insn (op2, XEXP (addr1, 0), GEN_INT (4)));
-      addr2 = gen_rtx_PLUS (Pmode, op2, XEXP (addr1, 1));
+      if (TARGET_AVOID_XFORM)
+       {
+         emit_insn (gen_add3_insn (op2, XEXP (addr1, 1), op2));
+         addr2 = op2;
+       }
+      else
+       addr2 = gen_rtx_PLUS (Pmode, op2, XEXP (addr1, 1));
+    }
+  else if (TARGET_AVOID_XFORM)
+    {
+      emit_insn (gen_add3_insn (op2, addr1, GEN_INT (4)));
+      addr2 = op2;
     }
   else
     {
@@ -2574,7 +2585,18 @@
   if (GET_CODE (addr1) == PLUS)
     {
       emit_insn (gen_add3_insn (op2, XEXP (addr1, 0), GEN_INT (4)));
-      addr2 = gen_rtx_PLUS (Pmode, op2, XEXP (addr1, 1));
+      if (TARGET_AVOID_XFORM)
+       {
+         emit_insn (gen_add3_insn (op2, XEXP (addr1, 1), op2));
+         addr2 = op2;
+       }
+      else
+       addr2 = gen_rtx_PLUS (Pmode, op2, XEXP (addr1, 1));
+    }
+  else if (TARGET_AVOID_XFORM)
+    {
+      emit_insn (gen_add3_insn (op2, addr1, GEN_INT (4)));
+      addr2 = op2;
     }
   else
     {
@@ -2655,7 +2677,18 @@
   if (GET_CODE (addr1) == PLUS)
     {
       emit_insn (gen_add3_insn (op2, XEXP (addr1, 0), GEN_INT (4)));
-      addr2 = gen_rtx_PLUS (SImode, op2, XEXP (addr1, 1));
+      if (TARGET_AVOID_XFORM)
+       {
+         emit_insn (gen_add3_insn (op2, XEXP (addr1, 1), op2));
+         addr2 = op2;
+       }
+      else
+       addr2 = gen_rtx_PLUS (SImode, op2, XEXP (addr1, 1));
+    }
+  else if (TARGET_AVOID_XFORM)
+    {
+      emit_insn (gen_add3_insn (op2, addr1, GEN_INT (4)));
+      addr2 = op2;
     }
   else
     {
@@ -2700,7 +2733,18 @@
   if (GET_CODE (addr1) == PLUS)
     {
       emit_insn (gen_add3_insn (op2, XEXP (addr1, 0), GEN_INT (4)));
-      addr2 = gen_rtx_PLUS (SImode, op2, XEXP (addr1, 1));
+      if (TARGET_AVOID_XFORM)
+       {
+         emit_insn (gen_add3_insn (op2, XEXP (addr1, 1), op2));
+         addr2 = op2;
+       }
+      else
+       addr2 = gen_rtx_PLUS (SImode, op2, XEXP (addr1, 1));
+    }
+  else if (TARGET_AVOID_XFORM)
+    {
+      emit_insn (gen_add3_insn (op2, addr1, GEN_INT (4)));
+      addr2 = op2;
     }
   else
     {

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index d7d4295dda63f7a3c17e02a9f6a9d92115099a99..984a01134c33a0f7af2b3fb04191a36067615ebf 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,11 @@
+2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+       Backport from mainline
+       2012-05-03  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+       PR target/53199
+       * gcc.target/powwerpc/pr53199.c: New file.
+
 2012-05-02  Tobias Burnus  <burnus@net-b.de>
 
        Backport from mainline

diff --git a/gcc/testsuite/gcc.target/powerpc/pr53199.c b/gcc/testsuite/gcc.target/powerpc/pr53199.c
new file mode 100644 (file)
index 0000000..89a0cad
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr53199.c
@@ -0,0 +1,50 @@
+/* { dg-do compile { target { powerpc*-*-* } } } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-options "-O2 -mcpu=power6 -mavoid-indexed-addresses" } */
+/* { dg-final { scan-assembler-times "lwbrx" 6 } } */
+/* { dg-final { scan-assembler-times "stwbrx" 6 } } */
+
+/* PR 51399: bswap gets an error if -mavoid-indexed-addresses was used in
+   creating the two lwbrx instructions.  */
+
+long long
+load64_reverse_1 (long long *p)
+{
+  return __builtin_bswap64 (*p);
+}
+
+long long
+load64_reverse_2 (long long *p)
+{
+  return __builtin_bswap64 (p[1]);
+}
+
+long long
+load64_reverse_3 (long long *p, int i)
+{
+  return __builtin_bswap64 (p[i]);
+}
+
+void
+store64_reverse_1 (long long *p, long long x)
+{
+  *p = __builtin_bswap64 (x);
+}
+
+void
+store64_reverse_2 (long long *p, long long x)
+{
+  p[1] = __builtin_bswap64 (x);
+}
+
+void
+store64_reverse_3 (long long *p, long long x, int i)
+{
+  p[i] = __builtin_bswap64 (x);
+}
+
+long long
+reg_reverse (long long x)
+{
+  return __builtin_bswap64 (x);
+}