OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

thumb2.md (thumb2_tlobits_cbranch): New insn pattern. 

* config/arm/thumb2.md (thumb2_tlobits_cbranch): New insn pattern.

	* gcc.target/arm/pr42879.c: New testcase.

From-SVN: r159212
This commit is contained in:
Wei Guozhi 2010-05-10 07:26:04 +00:00 committed by Wei Guozhi
parent 4af3ff4194
commit 333b67a9f1
4 changed files with 99 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2010-05-10 Wei Guozhi <carrot@google.com>
PR target/42879
* config/arm/thumb2.md (thumb2_tlobits_cbranch): New insn pattern.
2010-05-09 Joseph Myers <joseph@codesourcery.com>
PR c/10676

74
gcc/config/arm/thumb2.md
View File

@ -1442,3 +1442,77 @@
[(set_attr "length" "4,4,16")
(set_attr "predicable" "yes")]
)
(define_insn "*thumb2_tlobits_cbranch"
[(set (pc)
(if_then_else
(match_operator 0 "equality_operator"
[(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l,?h")
(match_operand:SI 2 "const_int_operand" "i,i")
(const_int 0))
(const_int 0)])
(label_ref (match_operand 3 "" ""))
(pc)))
(clobber (match_scratch:SI 4 "=l,X"))]
"TARGET_THUMB2"
"*
{
if (which_alternative == 0)
{
rtx op[3];
op[0] = operands[4];
op[1] = operands[1];
op[2] = GEN_INT (32 - INTVAL (operands[2]));
output_asm_insn (\"lsls\\t%0, %1, %2\", op);
switch (get_attr_length (insn))
{
case 4: return \"b%d0\\t%l3\";
case 6: return \"b%D0\\t.LCB%=\;b\\t%l3\\t%@long jump\\n.LCB%=:\";
default: return \"b%D0\\t.LCB%=\;bl\\t%l3\\t%@far jump\\n.LCB%=:\";
}
}
else
{
rtx op[2];
op[0] = operands[1];
op[1] = GEN_INT ((1 << INTVAL (operands[2])) - 1);
output_asm_insn (\"tst\\t%0, %1\", op);
switch (get_attr_length (insn))
{
case 6: return \"b%d0\\t%l3\";
case 8: return \"b%D0\\t.LCB%=\;b\\t%l3\\t%@long jump\\n.LCB%=:\";
default: return \"b%D0\\t.LCB%=\;bl\\t%l3\\t%@far jump\\n.LCB%=:\";
}
}
}"
[(set (attr "far_jump")
(if_then_else
(and (ge (minus (match_dup 3) (pc)) (const_int -2040))
(le (minus (match_dup 3) (pc)) (const_int 2048)))
(const_string "no")
(const_string "yes")))
(set (attr "length")
(if_then_else
(eq (symbol_ref ("which_alternative"))
(const_int 0))
(if_then_else
(and (ge (minus (match_dup 3) (pc)) (const_int -250))
(le (minus (match_dup 3) (pc)) (const_int 256)))
(const_int 4)
(if_then_else
(and (ge (minus (match_dup 3) (pc)) (const_int -2040))
(le (minus (match_dup 3) (pc)) (const_int 2048)))
(const_int 6)
(const_int 8)))
(if_then_else
(and (ge (minus (match_dup 3) (pc)) (const_int -250))
(le (minus (match_dup 3) (pc)) (const_int 256)))
(const_int 6)
(if_then_else
(and (ge (minus (match_dup 3) (pc)) (const_int -2040))
(le (minus (match_dup 3) (pc)) (const_int 2048)))
(const_int 8)
(const_int 10)))))]
)

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2010-05-10 Wei Guozhi <carrot@google.com>
PR target/42879
* gcc.target/arm/pr42879.c: New testcase.
2010-05-09 Joseph Myers <joseph@codesourcery.com>
PR c/44051

15
gcc/testsuite/gcc.target/arm/pr42879.c Normal file
View File

@ -0,0 +1,15 @@
/* { dg-options "-march=armv7-a -mthumb -Os" } */
/* { dg-final { scan-assembler "lsls" } } */
struct A
{
int v:1;
};
int bar();
int foo(struct A* p)
{
if (p->v)
return 1;
return bar();
}