Sync internal and external version:

Changes:
-x86 security patch (for ChromeOS)
-Fix bug in inlining.
-Fix freestanding C++ library build:
 http://gcc.gnu.org/viewcvs?view=revision&revision=173220
-Fix out-of-range branches in Thumb-2 mode.
-Fix gcda file corruption problem.
-Hanlde LDFLAGS_FOR_TARGETS in configure.  This is a backport of upstrem
 patch r173558.
-Backport upstream fix for Atom performance at r164379.

Change-Id: Id5a6cfb8949cbd390a0bb3546d55d83383ee4f8c

20 files changed, 345 insertions, 16 deletions

diff --git a/gcc-4.4.3/gcc/config/arm/thumb2.md b/gcc-4.4.3/gcc/config/arm/thumb2.md
index 6e03e8b21..c982ea7cd 100644
--- a/gcc-4.4.3/gcc/config/arm/thumb2.md
+++ b/gcc-4.4.3/gcc/config/arm/thumb2.md
@@ -1190,7 +1190,7 @@
    (clobber (reg:CC CC_REGNUM))]
   "TARGET_THUMB2"
   "*
-  if (get_attr_length (insn) == 2 && which_alternative == 0)
+  if (get_attr_length (insn) == 2)
     return \"cbz\\t%0, %l1\";
   else
     return \"cmp\\t%0, #0\;beq\\t%l1\";
@@ -1198,7 +1198,8 @@
   [(set (attr "length") 
         (if_then_else
 	    (and (ge (minus (match_dup 1) (pc)) (const_int 2))
-	         (le (minus (match_dup 1) (pc)) (const_int 128)))
+	         (le (minus (match_dup 1) (pc)) (const_int 128))
+	         (eq (symbol_ref ("which_alternative")) (const_int 0)))
 	    (const_int 2)
 	    (const_int 8)))]
 )
@@ -1212,7 +1213,7 @@
    (clobber (reg:CC CC_REGNUM))]
   "TARGET_THUMB2"
   "*
-  if (get_attr_length (insn) == 2 && which_alternative == 0)
+  if (get_attr_length (insn) == 2)
     return \"cbnz\\t%0, %l1\";
   else
     return \"cmp\\t%0, #0\;bne\\t%l1\";
@@ -1220,7 +1221,8 @@
   [(set (attr "length") 
         (if_then_else
 	    (and (ge (minus (match_dup 1) (pc)) (const_int 2))
-	         (le (minus (match_dup 1) (pc)) (const_int 128)))
+	         (le (minus (match_dup 1) (pc)) (const_int 128))
+	         (eq (symbol_ref ("which_alternative")) (const_int 0)))
 	    (const_int 2)
 	    (const_int 8)))]
 )
diff --git a/gcc-4.4.3/gcc/config/i386/i386.c b/gcc-4.4.3/gcc/config/i386/i386.c
index fa148be65..b237ed869 100644
--- a/gcc-4.4.3/gcc/config/i386/i386.c
+++ b/gcc-4.4.3/gcc/config/i386/i386.c
@@ -1481,6 +1481,9 @@ static unsigned int initial_ix86_tune_features[X86_TUNE_LAST] = {
   /* X86_TUNE_PAD_RETURNS */
   m_AMD_MULTIPLE | m_CORE2 | m_GENERIC,
 
+  /* X86_TUNE_PAD_SHORT_FUNCTION: Pad short funtion.  */
+  m_ATOM,
+
   /* X86_TUNE_EXT_80387_CONSTANTS */
   m_K6_GEODE | m_ATHLON_K8 | m_ATOM | m_PENT4 | m_NOCONA | m_PPRO
   | m_CORE2 | m_GENERIC,
@@ -7640,6 +7643,11 @@ ix86_file_end (void)
 
       xops[0] = gen_rtx_REG (Pmode, regno);
       xops[1] = gen_rtx_MEM (Pmode, stack_pointer_rtx);
+      /* Pad stack IP move with 4 instructions.  2 NOPs count as 1
+         instruction.  */
+      if (TARGET_PAD_SHORT_FUNCTION)
+	output_asm_insn ("nop; nop; nop; nop; nop; nop; nop; nop",
+			 xops);
       output_asm_insn ("mov%z0\t{%1, %0|%0, %1}", xops);
       output_asm_insn ("ret", xops);
     }
@@ -27911,17 +27919,134 @@ ix86_pad_returns (void)
     }
 }
 
+/* Count the minimum number of instructions in BB.  Return 4 if the
+   number of instructions >= 4.  */
+
+static int 
+ix86_count_insn_bb (basic_block bb)
+{
+  rtx insn;
+  int insn_count = 0;
+
+  /* Count number of instructions in this block.  Return 4 if the number
+     of instructions >= 4.  */
+  FOR_BB_INSNS (bb, insn)
+    {
+      /* Only happen in exit blocks.  */
+      if (JUMP_P (insn)
+	  && GET_CODE (PATTERN (insn)) == RETURN)
+	break;
+
+      if (NONDEBUG_INSN_P (insn)
+	  && GET_CODE (PATTERN (insn)) != USE
+	  && GET_CODE (PATTERN (insn)) != CLOBBER)
+	{
+	  insn_count++;
+	  if (insn_count >= 4)
+	    return insn_count;
+	}
+    }
+
+  return insn_count;
+}
+
+
+/* Count the minimum number of instructions in code path in BB.  
+   Return 4 if the number of instructions >= 4.  */
+
+static int 
+ix86_count_insn (basic_block bb)
+{
+  edge e;
+  edge_iterator ei;
+  int min_prev_count;
+
+  /* Only bother counting instructions along paths with no
+     more than 2 basic blocks between entry and exit.  Given
+     that BB has an edge to exit, determine if a predecessor
+     of BB has an edge from entry.  If so, compute the number
+     of instructions in the predecessor block.  If there
+     happen to be multiple such blocks, compute the minimum.  */
+  min_prev_count = 4;
+  FOR_EACH_EDGE (e, ei, bb->preds)
+    {
+      edge prev_e;
+      edge_iterator prev_ei;
+
+      if (e->src == ENTRY_BLOCK_PTR)
+	{
+	  min_prev_count = 0;
+	  break;
+	}
+      FOR_EACH_EDGE (prev_e, prev_ei, e->src->preds)
+	{
+	  if (prev_e->src == ENTRY_BLOCK_PTR)
+	    {
+	      int count = ix86_count_insn_bb (e->src);
+	      if (count < min_prev_count)
+		min_prev_count = count;
+	      break;
+	    }
+	}
+    }
+
+  if (min_prev_count < 4)
+    min_prev_count += ix86_count_insn_bb (bb);
+
+  return min_prev_count;
+}
+
+/* Pad short funtion to 4 instructions.   */
+
+static void
+ix86_pad_short_function (void)
+{
+  edge e;
+  edge_iterator ei;
+
+  FOR_EACH_EDGE (e, ei, EXIT_BLOCK_PTR->preds)
+    {
+      rtx ret = BB_END (e->src);
+      if (JUMP_P (ret) && GET_CODE (PATTERN (ret)) == RETURN)
+	{
+	  int insn_count = ix86_count_insn (e->src);
+
+	  /* Pad short function.  */
+	  if (insn_count < 4)
+	    {
+	      rtx insn = ret;
+
+	      /* Find epilogue.  */
+	      while (insn
+		     && (!NOTE_P (insn)
+			 || NOTE_KIND (insn) != NOTE_INSN_EPILOGUE_BEG))
+		insn = PREV_INSN (insn);
+
+	      if (!insn)
+		insn = ret;
+
+	      /* Two NOPs are counted as one instruction.  */
+	      insn_count = 2 * (4  - insn_count);
+	      emit_insn_before (gen_nops (GEN_INT (insn_count)), insn);
+	    }
+	}
+    }
+}
+
 /* Implement machine specific optimizations.  We implement padding of returns
    for K8 CPUs and pass to avoid 4 jumps in the single 16 byte window.  */
 static void
 ix86_reorg (void)
 {
-  if (TARGET_PAD_RETURNS && optimize
-      && optimize_function_for_speed_p (cfun))
-    ix86_pad_returns ();
-  if (TARGET_FOUR_JUMP_LIMIT && optimize
-      && optimize_function_for_speed_p (cfun))
-    ix86_avoid_jump_misspredicts ();
+  if (optimize && optimize_function_for_speed_p (cfun))
+    {
+      if (TARGET_PAD_SHORT_FUNCTION)
+	ix86_pad_short_function ();
+      else if (TARGET_PAD_RETURNS)
+	ix86_pad_returns ();
+      if (TARGET_FOUR_JUMP_LIMIT)
+	ix86_avoid_jump_misspredicts ();
+    }
 }
 
 /* Return nonzero when QImode register that must be represented via REX prefix
diff --git a/gcc-4.4.3/gcc/config/i386/i386.h b/gcc-4.4.3/gcc/config/i386/i386.h
index e9014b79a..d7cb8ac3c 100644
--- a/gcc-4.4.3/gcc/config/i386/i386.h
+++ b/gcc-4.4.3/gcc/config/i386/i386.h
@@ -291,6 +291,7 @@ enum ix86_tune_indices {
   X86_TUNE_USE_BT,
   X86_TUNE_USE_INCDEC,
   X86_TUNE_PAD_RETURNS,
+  X86_TUNE_PAD_SHORT_FUNCTION,
   X86_TUNE_EXT_80387_CONSTANTS,
   X86_TUNE_SHORTEN_X87_SSE,
   X86_TUNE_AVOID_VECTOR_DECODE,
@@ -372,6 +373,8 @@ extern unsigned char ix86_tune_features[X86_TUNE_LAST];
 #define TARGET_USE_BT		ix86_tune_features[X86_TUNE_USE_BT]
 #define TARGET_USE_INCDEC	ix86_tune_features[X86_TUNE_USE_INCDEC]
 #define TARGET_PAD_RETURNS	ix86_tune_features[X86_TUNE_PAD_RETURNS]
+#define TARGET_PAD_SHORT_FUNCTION \
+	ix86_tune_features[X86_TUNE_PAD_SHORT_FUNCTION]
 #define TARGET_EXT_80387_CONSTANTS \
 	ix86_tune_features[X86_TUNE_EXT_80387_CONSTANTS]
 #define TARGET_SHORTEN_X87_SSE	ix86_tune_features[X86_TUNE_SHORTEN_X87_SSE]
diff --git a/gcc-4.4.3/gcc/config/i386/i386.md b/gcc-4.4.3/gcc/config/i386/i386.md
index bbe915112..7989c31db 100644
--- a/gcc-4.4.3/gcc/config/i386/i386.md
+++ b/gcc-4.4.3/gcc/config/i386/i386.md
@@ -77,6 +77,7 @@
    (UNSPEC_TLSDESC		23)
 
    ; Other random patterns
+   (UNSPEC_NOPS			29)
    (UNSPEC_SCAS			30)
    (UNSPEC_FNSTSW		31)
    (UNSPEC_SAHF			32)
@@ -15323,6 +15324,39 @@
    (set_attr "length_immediate" "0")
    (set_attr "modrm" "0")])
 
+;; Generate nops.  Operand 0 is the number of nops, up to 8.
+(define_insn "nops"
+  [(unspec [(match_operand 0 "const_int_operand" "")]
+	   UNSPEC_NOPS)]
+  "reload_completed"
+{
+  switch (INTVAL (operands[0]))
+    {
+    case 1:
+      return "nop";
+    case 2:
+      return "nop; nop";
+    case 3:
+      return "nop; nop; nop";
+    case 4:
+      return "nop; nop; nop; nop";
+    case 5:
+      return "nop; nop; nop; nop; nop";
+    case 6:
+      return "nop; nop; nop; nop; nop; nop";
+    case 7:
+      return "nop; nop; nop; nop; nop; nop; nop";
+    case 8:
+      return "nop; nop; nop; nop; nop; nop; nop; nop";
+    default:
+      gcc_unreachable ();
+      break;
+  }
+}
+  [(set (attr "length") (symbol_ref "INTVAL (operands[0])"))
+   (set_attr "length_immediate" "0")
+   (set_attr "modrm" "0")])
+
 ;; Align to 16-byte boundary, max skip in op0.  Used to avoid
 ;; branch prediction penalty for the third jump in a 16-byte
 ;; block on K8.
diff --git a/gcc-4.4.3/gcc/esp.h b/gcc-4.4.3/gcc/esp.h
index db2135b72..cbcf9d1f9 100644
--- a/gcc-4.4.3/gcc/esp.h
+++ b/gcc-4.4.3/gcc/esp.h
@@ -34,8 +34,19 @@
 	/*	ESP_LINK_SPEC is added to LINK_PIE_SPEC if esp is enable
 		-z now will be added if we don't have -vanilla spec. We do a -pie incompatible check
 		Don't remove the specs in the end  */
-	#define ESP_LINK_SPEC "%(esp_link_now) %(esp_link_pie_check) "
-	#define ESP_LINK_NOW_SPEC "%{!nonow:-z now}"
+	#define ESP_LINK_SPEC "%(esp_link_now) %(esp_link_pie_check) %(esp_link_relro)"
+
+  #if defined EFAULT_BIND_NOW
+	  #define ESP_LINK_NOW_SPEC "%{!nonow:-z now}"
+  #else
+	  #define ESP_LINK_NOW_SPEC ""
+  #endif
+
+  #if defined EFAULT_RELRO
+	  #define ESP_LINK_RELRO_SPEC "%{!norelro:-z relro}"
+  #else
+	  #define ESP_LINK_RELRO_SPEC ""
+  #endif
 
 	/*	We use ESP_COMMAND_OPTIONS_SPEC to add pie command-line options.  */
 	#define ESP_COMMAND_OPTIONS_SPEC "%{!D__KERNEL__:%{!nopie:%(esp_options_pie) %(esp_link_pie)}}"
@@ -120,6 +131,7 @@
 		{ "esp_cc1_strict_overflow",				ESP_CC1_STRICT_OVERFLOW_SPEC },	\
 		{ "esp_link",								ESP_LINK_SPEC },				\
 		{ "esp_link_now",							ESP_LINK_NOW_SPEC },			\
+		{ "esp_link_relro",							ESP_LINK_RELRO_SPEC },			\
 		{ "esp_link_pie",							ESP_LINK_PIE_SPEC },			\
 		{ "esp_link_pie_check",						ESP_LINK_PIE_CHECK_SPEC },		\
 		{ "esp_command_options",					ESP_COMMAND_OPTIONS_SPEC },		\
diff --git a/gcc-4.4.3/gcc/gcc.c b/gcc-4.4.3/gcc/gcc.c
index 3ce244cdf..afa6a014b 100644
--- a/gcc-4.4.3/gcc/gcc.c
+++ b/gcc-4.4.3/gcc/gcc.c
@@ -829,8 +829,11 @@ static const char *cpp_unique_options =
  %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
  %{H} %C %{D*&U*&A*} %{i*} %Z %i\
  %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
- %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
- %{E|M|MM:%W{o*}}";
+ %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}"
+#ifdef EFAULT_FORTIFY_SOURCE
+" %{!D_FORTIFY_SOURCE:%{!D_FORTIFY_SOURCE=*:%{!U_FORTIFY_SOURCE:-D_FORTIFY_SOURCE=2}}}"
+#endif
+" %{E|M|MM:%W{o*}}";
 
 /* This contains cpp options which are common with cc1_options and are passed
    only when preprocessing only to avoid duplication.  We pass the cc1 spec
diff --git a/gcc-4.4.3/gcc/ipa-inline.c b/gcc-4.4.3/gcc/ipa-inline.c
index 48754d467..e2745dd8c 100644
--- a/gcc-4.4.3/gcc/ipa-inline.c
+++ b/gcc-4.4.3/gcc/ipa-inline.c
@@ -1495,8 +1495,7 @@ update_caller_keys (fibheap_t heap, struct cgraph_node *node,
   struct cgraph_edge *edge;
   const char *failed_reason;
 
-  if (!node->local.inlinable || node->local.disregard_inline_limits
-      || node->global.inlined_to)
+  if (!node->local.inlinable || node->global.inlined_to)
     return;
   if (bitmap_bit_p (updated_nodes, node->uid))
     return;
diff --git a/gcc-4.4.3/gcc/libgcov.c b/gcc-4.4.3/gcc/libgcov.c
index 9b1c7bb3e..a39cee7d5 100644
--- a/gcc-4.4.3/gcc/libgcov.c
+++ b/gcc-4.4.3/gcc/libgcov.c
@@ -802,6 +802,8 @@ gcov_merge_gcda_file (struct gcov_info *info,
   int error = 0;
   gcov_unsigned_t tag, length;
 
+  eof_pos = 0;
+
   tag = gcov_read_unsigned ();
   if (tag)
     {
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-1.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-1.c
new file mode 100644
index 000000000..87a9d6c81
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-1.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fomit-frame-pointer -mtune=generic -S" } */
+/* { dg-final { scan-assembler "rep" } } */
+/* { dg-final { scan-assembler-not "nop" } } */
+
+void
+foo ()
+{
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-10.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-10.c
new file mode 100644
index 000000000..6ba3b7874
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-10.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-not "nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+extern void bar ();
+
+int
+foo2 (int z, int x)
+{
+  if (x == 1)
+    {
+      bar ();
+      return z;
+    }
+  else
+    return x + z;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-2.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-2.c
new file mode 100644
index 000000000..964547cc9
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-2.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop; nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+void
+foo ()
+{
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-3.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-3.c
new file mode 100644
index 000000000..52442b40f
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-3.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-not "nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int s[8] = {1, 2, 3, 4, 5, 6, 7, 8};
+int d[8] = {11, 22, 33, 44, 55, 66, 77, 88};
+
+void
+foo ()
+{
+  int i;
+  for (i = 0; i < 8; i++)
+    d[i] = s[i] + 0x1000;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-4.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-4.c
new file mode 100644
index 000000000..a7033fae3
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-4.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S -fPIC" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop; nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+extern int bar;
+
+int
+foo ()
+{
+  return bar;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5a.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5a.c
new file mode 100644
index 000000000..9d0aa2a80
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5a.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y, int z)
+{
+   return x + y + z;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5b.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5b.c
new file mode 100644
index 000000000..2e1cf129d
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-5b.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y, int z)
+{
+   return x + y + z;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6a.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6a.c
new file mode 100644
index 000000000..e865967a7
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6a.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y)
+{
+   return x + y;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6b.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6b.c
new file mode 100644
index 000000000..41aeaee7c
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-6b.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop; nop; nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y)
+{
+   return x + y;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-7.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-7.c
new file mode 100644
index 000000000..7a7493d05
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-7.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target ilp32 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-not "nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y, int z)
+{
+   return x + y + z + y;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-8.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-8.c
new file mode 100644
index 000000000..873a0a4fa
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-8.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop; nop; nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+int
+foo (int x, int y)
+{
+   return y;
+}
diff --git a/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-9.c b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-9.c
new file mode 100644
index 000000000..3d68805d1
--- /dev/null
+++ b/gcc-4.4.3/gcc/testsuite/gcc.target/i386/pad-9.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target lp64 } */
+/* { dg-options "-O2 -fomit-frame-pointer -march=atom -S" } */
+/* { dg-final { scan-assembler-times "nop; nop; nop; nop" 1 } } */
+/* { dg-final { scan-assembler-not "nop; nop; nop; nop; nop" } } */
+/* { dg-final { scan-assembler-not "rep" } } */
+
+extern void bar (void);
+
+void
+foo (int x)
+{
+  if (x)
+    bar ();
+}