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Subject: [Bug target/54429] [SH] SImode values get ferried through FPUL and FP regs for -O0
Date: Tue, 13 Nov 2012 08:45:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54429

--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> 2012-11-13 08:44:43 UTC ---
I've tested this:

Index: gcc/config/sh/sh.c
===================================================================
--- gcc/config/sh/sh.c    (revision 193423)
+++ gcc/config/sh/sh.c    (working copy)
@@ -12113,6 +12113,11 @@
   if (FP_REGISTER_P (regno) && mode == SFmode)
     return true;

+  if (FP_REGISTER_P (regno)
+      && !(GET_MODE_CLASS (mode) == MODE_FLOAT
+       || GET_MODE_CLASS (mode) == MODE_VECTOR_FLOAT))
+    return false;
+
   if (mode == V2SFmode)
     {
       if (((FP_REGISTER_P (regno) && (regno - FIRST_FP_REG) % 2 == 0)


on rev 193423.  There are a few failures on targets with HW FPU:

FAIL: gcc.c-torture/execute/20080502-1.c compilation
FAIL: gcc.c-torture/execute/ieee/copysign1.c compilation
FAIL: gcc.dg/builtins-32.c (internal compiler error)
FAIL: gcc.dg/builtins-50.c (internal compiler error)
FAIL: gcc.dg/pr48335-7.c (internal compiler error)

I'll check out the details.