This patch fixes the failures in the following tests if --with-cpu is not used
to set the cpu to cpus with vsx enabled (power7/power8):
gcc.target/powerpc/altivec-splat.c
gcc.target/powerpc/pr27158.c
I have built these patches on power7 systems (default cpu = power7, and
power6), power8 systems (default cpu = power8 and power5). The compilers
bootstrap and do not have regressions. Are the patches ok to install?
2014-11-20 Michael Meissner <meiss...@linux.vnet.ibm.com>
PR target/63965
* config/rs6000/rs6000.c (rs6000_setup_reg_addr_masks): Do not set
Altivec & -16 mask if the type is not valid for Altivec registers.
(rs6000_secondary_reload_memory): Add support for ((reg + const) +
reg) that occurs during push_reload processing.
* config/rs6000/altivec.md (altivec_mov<mode>): Add instruction
alternative for moving constant vectors which are easy altivec
constants to GPRs. Set the length attribute each of the
alternatives.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.vnet.ibm.com, phone: +1 (978) 899-4797
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c (revision 217802)
+++ gcc/config/rs6000/rs6000.c (working copy)
@@ -2505,7 +2505,8 @@ rs6000_setup_reg_addr_masks (void)
/* VMX registers can do (REG & -16) and ((REG+REG) & -16)
addressing on 128-bit types. */
- if (rc == RELOAD_REG_VMX && GET_MODE_SIZE (m2) == 16)
+ if (rc == RELOAD_REG_VMX && GET_MODE_SIZE (m2) == 16
+ && (addr_mask & RELOAD_REG_VALID) != 0)
addr_mask |= RELOAD_REG_AND_M16;
reg_addr[m].addr_mask[rc] = addr_mask;
@@ -16652,6 +16653,17 @@ rs6000_secondary_reload_memory (rtx addr
}
}
+ /* (plus (plus (reg) (constant)) (reg)) is also generated during
+ push_reload processing, so handle it now. */
+ else if (GET_CODE (plus_arg0) == PLUS && REG_P (plus_arg1))
+ {
+ if ((addr_mask & RELOAD_REG_INDEXED) == 0)
+ {
+ extra_cost = 1;
+ type = "indexed #2";
+ }
+ }
+
else if (!base_reg_operand (plus_arg0, GET_MODE (plus_arg0)))
{
fail_msg = "no base register #2";
Index: gcc/config/rs6000/altivec.md
===================================================================
--- gcc/config/rs6000/altivec.md (revision 217802)
+++ gcc/config/rs6000/altivec.md (working copy)
@@ -189,8 +189,8 @@ (define_mode_attr VU_char [(V2DI "w") (V
;; Vector move instructions.
(define_insn "*altivec_mov<mode>"
- [(set (match_operand:VM2 0 "nonimmediate_operand" "=Z,v,v,*Y,*r,*r,v,v")
- (match_operand:VM2 1 "input_operand" "v,Z,v,r,Y,r,j,W"))]
+ [(set (match_operand:VM2 0 "nonimmediate_operand" "=Z,v,v,*Y,*r,*r,v,v,*r")
+ (match_operand:VM2 1 "input_operand" "v,Z,v,r,Y,r,j,W,W"))]
"VECTOR_MEM_ALTIVEC_P (<MODE>mode)
&& (register_operand (operands[0], <MODE>mode)
|| register_operand (operands[1], <MODE>mode))"
@@ -205,10 +205,12 @@ (define_insn "*altivec_mov<mode>"
case 5: return "#";
case 6: return "vxor %0,%0,%0";
case 7: return output_vec_const_move (operands);
+ case 8: return "#";
default: gcc_unreachable ();
}
}
- [(set_attr "type" "vecstore,vecload,vecsimple,store,load,*,vecsimple,*")])
+ [(set_attr "type" "vecstore,vecload,vecsimple,store,load,*,vecsimple,*,*")
+ (set_attr "length" "4,4,4,20,20,20,4,8,32")])
;; Unlike other altivec moves, allow the GPRs, since a normal use of TImode
;; is for unions. However for plain data movement, slightly favor the vector
