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generic-poky/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0009-Backport-from-mainline...

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Upstream-Status: Inappropriate [Backport]
From 8c9cc2d03061ea065b70695ef4903a0390c01fb8 Mon Sep 17 00:00:00 2001
From: uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 26 Mar 2011 18:41:02 +0000
Subject: [PATCH 009/200] Backport from mainline:
2011-03-24 Uros Bizjak <ubizjak@gmail.com>
PR target/48237
* config/i386/i386.md (*movdf_internal_rex64): Do not split
alternatives that can be handled with movq or movabsq insn.
(*movdf_internal): Disable for !TARGET_64BIT.
(*movdf_internal_nointeger): Ditto.
* config/i386/i386.c (ix86_print_operand): Handle DFmode immediates.
testsuite/ChangeLog:
Backport from mainline:
2011-03-24 Uros Bizjak <ubizjak@gmail.com>
PR target/48237
* gcc.target/i386/pr48237.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@171560 138bc75d-0d04-0410-961f-82ee72b054a4
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 82d999b..4fb654f 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -14389,17 +14389,21 @@ ix86_print_operand (FILE *file, rtx x, int code)
fprintf (file, "0x%08x", (unsigned int) l);
}
- /* These float cases don't actually occur as immediate operands. */
else if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == DFmode)
{
- char dstr[30];
+ REAL_VALUE_TYPE r;
+ long l[2];
- real_to_decimal (dstr, CONST_DOUBLE_REAL_VALUE (x), sizeof (dstr), 0, 1);
- fputs (dstr, file);
+ REAL_VALUE_FROM_CONST_DOUBLE (r, x);
+ REAL_VALUE_TO_TARGET_DOUBLE (r, l);
+
+ if (ASSEMBLER_DIALECT == ASM_ATT)
+ putc ('$', file);
+ fprintf (file, "0x%lx%08lx", l[1] & 0xffffffff, l[0] & 0xffffffff);
}
- else if (GET_CODE (x) == CONST_DOUBLE
- && GET_MODE (x) == XFmode)
+ /* These float cases don't actually occur as immediate operands. */
+ else if (GET_CODE (x) == CONST_DOUBLE && GET_MODE (x) == XFmode)
{
char dstr[30];
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index a17ab7a..b50a52a 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2906,9 +2906,9 @@
(define_insn "*movdf_internal_rex64"
[(set (match_operand:DF 0 "nonimmediate_operand"
- "=f,m,f,r ,m ,Y2*x,Y2*x,Y2*x,m ,Yi,r ")
+ "=f,m,f,r ,m,!r,!m,Y2*x,Y2*x,Y2*x,m ,Yi,r ")
(match_operand:DF 1 "general_operand"
- "fm,f,G,rmF,Fr,C ,Y2*x,m ,Y2*x,r ,Yi"))]
+ "fm,f,G,rm,r,F ,F ,C ,Y2*x,m ,Y2*x,r ,Yi"))]
"TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& (reload_in_progress || reload_completed
|| (ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_LARGE)
@@ -2929,9 +2929,15 @@
case 3:
case 4:
- return "#";
+ return "mov{q}\t{%1, %0|%0, %1}";
case 5:
+ return "movabs{q}\t{%1, %0|%0, %1}";
+
+ case 6:
+ return "#";
+
+ case 7:
switch (get_attr_mode (insn))
{
case MODE_V4SF:
@@ -2949,9 +2955,9 @@
default:
gcc_unreachable ();
}
- case 6:
- case 7:
case 8:
+ case 9:
+ case 10:
switch (get_attr_mode (insn))
{
case MODE_V4SF:
@@ -2986,17 +2992,27 @@
gcc_unreachable ();
}
- case 9:
- case 10:
+ case 11:
+ case 12:
return "%vmovd\t{%1, %0|%0, %1}";
default:
gcc_unreachable();
}
}
- [(set_attr "type" "fmov,fmov,fmov,multi,multi,sselog1,ssemov,ssemov,ssemov,ssemov,ssemov")
+ [(set_attr "type" "fmov,fmov,fmov,imov,imov,imov,multi,sselog1,ssemov,ssemov,ssemov,ssemov,ssemov")
+ (set (attr "modrm")
+ (if_then_else
+ (and (eq_attr "alternative" "5") (eq_attr "type" "imov"))
+ (const_string "0")
+ (const_string "*")))
+ (set (attr "length_immediate")
+ (if_then_else
+ (and (eq_attr "alternative" "5") (eq_attr "type" "imov"))
+ (const_string "8")
+ (const_string "*")))
(set (attr "prefix")
- (if_then_else (eq_attr "alternative" "0,1,2,3,4")
+ (if_then_else (eq_attr "alternative" "0,1,2,3,4,5,6")
(const_string "orig")
(const_string "maybe_vex")))
(set (attr "prefix_data16")
@@ -3006,18 +3022,18 @@
(set (attr "mode")
(cond [(eq_attr "alternative" "0,1,2")
(const_string "DF")
- (eq_attr "alternative" "3,4,9,10")
+ (eq_attr "alternative" "3,4,5,6,11,12")
(const_string "DI")
/* For SSE1, we have many fewer alternatives. */
(eq (symbol_ref "TARGET_SSE2") (const_int 0))
- (cond [(eq_attr "alternative" "5,6")
+ (cond [(eq_attr "alternative" "7,8")
(const_string "V4SF")
]
(const_string "V2SF"))
/* xorps is one byte shorter. */
- (eq_attr "alternative" "5")
+ (eq_attr "alternative" "7")
(cond [(ne (symbol_ref "optimize_function_for_size_p (cfun)")
(const_int 0))
(const_string "V4SF")
@@ -3032,7 +3048,7 @@
chains, otherwise use short move to avoid extra work.
movaps encodes one byte shorter. */
- (eq_attr "alternative" "6")
+ (eq_attr "alternative" "8")
(cond
[(ne (symbol_ref "optimize_function_for_size_p (cfun)")
(const_int 0))
@@ -3045,7 +3061,7 @@
/* For architectures resolving dependencies on register
parts we may avoid extra work to zero out upper part
of register. */
- (eq_attr "alternative" "7")
+ (eq_attr "alternative" "9")
(if_then_else
(ne (symbol_ref "TARGET_SSE_SPLIT_REGS")
(const_int 0))
@@ -3059,7 +3075,7 @@
"=f,m,f,r ,o ,Y2*x,Y2*x,Y2*x,m ")
(match_operand:DF 1 "general_operand"
"fm,f,G,roF,Fr,C ,Y2*x,m ,Y2*x"))]
- "!(MEM_P (operands[0]) && MEM_P (operands[1]))
+ "!TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& optimize_function_for_speed_p (cfun)
&& TARGET_INTEGER_DFMODE_MOVES
&& (reload_in_progress || reload_completed
@@ -3199,9 +3215,9 @@
"=f,m,f,*r ,o ,Y2*x,Y2*x,Y2*x ,m ")
(match_operand:DF 1 "general_operand"
"fm,f,G,*roF,*Fr,C ,Y2*x,mY2*x,Y2*x"))]
- "!(MEM_P (operands[0]) && MEM_P (operands[1]))
- && ((optimize_function_for_size_p (cfun)
- || !TARGET_INTEGER_DFMODE_MOVES) && !TARGET_64BIT)
+ "!TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
+ && (optimize_function_for_size_p (cfun)
+ || !TARGET_INTEGER_DFMODE_MOVES)
&& (reload_in_progress || reload_completed
|| (ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_LARGE)
|| (!(TARGET_SSE2 && TARGET_SSE_MATH)
new file mode 100644
index 0000000..e20446e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr48237.c
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O -fcaller-saves -fschedule-insns2 -fselective-scheduling2 -mtune=core2" } */
+
+union double_union
+{
+ double d;
+ int i[2];
+};
+
+void bar (int, ...);
+
+void
+foo (double d)
+{
+ union double_union du = { d };
+ while (1)
+ {
+ du.i[1] -= 0x100000L;
+ bar (0, du.d);
+ du.d += d;
+ }
+}
--
1.7.0.4
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