Simplify post epilogue_completed splitters.
Now that we have post epilogue_completed split point for all
optimization levels, we can simplify post epilogue_completed splitters
considerably. If corresponding define_peephole2 pattern fails to
allocate a temporary register (or if peephole2 pass isn't run at all),
we can now always split invalid RTX after epilogue_completed is set.
Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.
* config/i386/i386.md (*pushdi2_rex64 peephole2): Remove.
(*pushdi2_rex64 peephole2): Unconditionally split after
epilogue_completed.
(*ashl<mode>3_doubleword): Ditto.
(*<shift_insn><mode>3_doubleword): Ditto.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 46b442dae51..496a8666643 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -1688,38 +1688,21 @@
;; First try to get scratch register and go through it. In case this
;; fails, push sign extended lower part first and then overwrite
;; upper part by 32bit move.
+
(define_peephole2
[(match_scratch:DI 2 "r")
(set (match_operand:DI 0 "push_operand")
(match_operand:DI 1 "immediate_operand"))]
- "TARGET_64BIT && !symbolic_operand (operands[1], DImode)
+ "TARGET_64BIT
+ && !symbolic_operand (operands[1], DImode)
&& !x86_64_immediate_operand (operands[1], DImode)"
[(set (match_dup 2) (match_dup 1))
(set (match_dup 0) (match_dup 2))])
-;; We need to define this as both peepholer and splitter for case
-;; peephole2 pass is not run.
-;; "&& 1" is needed to keep it from matching the previous pattern.
-(define_peephole2
- [(set (match_operand:DI 0 "push_operand")
- (match_operand:DI 1 "immediate_operand"))]
- "TARGET_64BIT && !symbolic_operand (operands[1], DImode)
- && !x86_64_immediate_operand (operands[1], DImode) && 1"
- [(set (match_dup 0) (match_dup 1))
- (set (match_dup 2) (match_dup 3))]
-{
- split_double_mode (DImode, &operands[1], 1, &operands[2], &operands[3]);
-
- operands[1] = gen_lowpart (DImode, operands[2]);
- operands[2] = gen_rtx_MEM (SImode, gen_rtx_PLUS (Pmode, stack_pointer_rtx,
- GEN_INT (4)));
-})
-
(define_split
[(set (match_operand:DI 0 "push_operand")
(match_operand:DI 1 "immediate_operand"))]
- "TARGET_64BIT && ((optimize > 0 && flag_peephole2)
- ? epilogue_completed : reload_completed)
+ "TARGET_64BIT && epilogue_completed
&& !symbolic_operand (operands[1], DImode)
&& !x86_64_immediate_operand (operands[1], DImode)"
[(set (match_dup 0) (match_dup 1))
@@ -10586,7 +10569,7 @@
(ashift:DWI (match_operand:DWI 1 "nonmemory_operand")
(match_operand:QI 2 "nonmemory_operand")))
(clobber (reg:CC FLAGS_REG))]
- "(optimize && flag_peephole2) ? epilogue_completed : reload_completed"
+ "epilogue_completed"
[(const_int 0)]
"ix86_split_ashl (operands, NULL_RTX, <MODE>mode); DONE;")
@@ -11338,7 +11321,7 @@
(clobber (reg:CC FLAGS_REG))]
""
"#"
- "(optimize && flag_peephole2) ? epilogue_completed : reload_completed"
+ "epilogue_completed"
[(const_int 0)]
"ix86_split_<shift_insn> (operands, NULL_RTX, <MODE>mode); DONE;"
[(set_attr "type" "multi")])
