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Author SHA1 Message Date
Chris Lattner
b1ea71fbcd Simplify the code and rearrange it. No major functionality changes here. 
llvm-svn: 21759
 2005-05-07 04:08:02 +00:00
Jeff Cohen
eafa15885e Silence VC++ warnings about unsafe mixing of ints and bools with the | operator. 
llvm-svn: 21758
 2005-05-07 02:44:04 +00:00
Chris Lattner
fc887cc3da add note about bit builtins newly supported 
llvm-svn: 21757
 2005-05-07 02:21:21 +00:00
Chris Lattner
d6906dc6af new testcase 
llvm-svn: 21756
 2005-05-07 02:16:08 +00:00
Chris Lattner
b25579d09b fix bugs in my previous commit clarify the return type of the bit ops 
llvm-svn: 21755
 2005-05-07 01:46:40 +00:00
Chris Lattner
069d6762aa add a couple of notes 
llvm-svn: 21754
 2005-05-06 23:08:23 +00:00
Chris Lattner
5ba10fa79c document calling convention extensions 
llvm-svn: 21753
 2005-05-06 22:57:40 +00:00
Chris Lattner
f6775e16bf remove some dead (always dynamically false) flags 
llvm-svn: 21752
 2005-05-06 22:35:09 +00:00
Chris Lattner
1f6d3b2344 encode calling conventions for call/invoke instructions. 
llvm-svn: 21751
 2005-05-06 22:34:01 +00:00
Chris Lattner
d1e76535b2 new testcase 
llvm-svn: 21750
 2005-05-06 22:33:44 +00:00
Chris Lattner
494f3da7b3 encode function calling convs in the bytecode file. invoke and call are 
still to come.

llvm-svn: 21749
 2005-05-06 20:42:57 +00:00
Chris Lattner
562734e130 parse new calling conv specifiers 
llvm-svn: 21748
 2005-05-06 20:27:19 +00:00
Chris Lattner
de5b492521 wrap a longline 
llvm-svn: 21747
 2005-05-06 20:27:03 +00:00
Chris Lattner
26a44493ef add support for explicit calling conventions 
llvm-svn: 21746
 2005-05-06 20:26:43 +00:00
Chris Lattner
d2dfcb3c0e Add support for explicit calling conventions 
llvm-svn: 21745
 2005-05-06 20:26:26 +00:00
Chris Lattner
b1952fe785 New file 
llvm-svn: 21744
 2005-05-06 19:59:08 +00:00
Chris Lattner
0995b3da02 use splice instead of remove/insert for a minor speedup 
llvm-svn: 21743
 2005-05-06 19:58:35 +00:00
Chris Lattner
146014b748 remove some ugly hacks that are no longer needed since andrew removed the 
varargs munging code

llvm-svn: 21742
 2005-05-06 19:49:51 +00:00
Chris Lattner
c9be572154 BAD typeo which caused many testsuite failures last night. Note to self, do 
not change code after testing it without retesting!

llvm-svn: 21741
 2005-05-06 17:13:16 +00:00
Chris Lattner
1bc2753d69 clean up the CBE output a bit 
llvm-svn: 21740
 2005-05-06 06:58:42 +00:00
Chris Lattner
f70b2785b7 add tail marker as a comment 
llvm-svn: 21739
 2005-05-06 06:53:07 +00:00
Chris Lattner
4e9d804f1d Make the stub functions be tail calls 
llvm-svn: 21738
 2005-05-06 06:48:54 +00:00
Chris Lattner
146447f57a Preserve tail marker 
llvm-svn: 21737
 2005-05-06 06:48:21 +00:00
Chris Lattner
0187977904 Implement Transforms/Inline/inline-tail.ll 
llvm-svn: 21736
 2005-05-06 06:47:52 +00:00
Chris Lattner
170a0f7d6b Make sure to not accidentally get a bogus tail marker 
llvm-svn: 21735
 2005-05-06 06:47:37 +00:00
Chris Lattner
3d4098b1e0 preserve the tail marker 
llvm-svn: 21734
 2005-05-06 06:46:58 +00:00
Chris Lattner
027639a16c add a default arg 
llvm-svn: 21733
 2005-05-06 06:22:10 +00:00
Chris Lattner
0080700e0c Don't forget these are calls 
llvm-svn: 21730
 2005-05-06 06:21:59 +00:00
Chris Lattner
47c5cd63f6 lex tail 
llvm-svn: 21729
 2005-05-06 06:20:33 +00:00
Chris Lattner
e43f733387 test that tail call survives bytecodification 
llvm-svn: 21728
 2005-05-06 06:18:33 +00:00
Chris Lattner
59d23baab1 add bytecode reader support for tail calls 
llvm-svn: 21727
 2005-05-06 06:13:34 +00:00
Chris Lattner
f68bbda9d4 Hilight tail 
llvm-svn: 21726
 2005-05-06 06:07:34 +00:00
Chris Lattner
a667732618 These are legal for tail calls 
llvm-svn: 21723
 2005-05-06 05:59:50 +00:00
Chris Lattner
72ffd7e7d5 Add a 'tail' marker for call instructions, patch contributed by 
Alexander Friedman.

llvm-svn: 21722
 2005-05-06 05:51:46 +00:00
Chris Lattner
3cbfbba4f7 Add info on new 'tail' marker 
llvm-svn: 21721
 2005-05-06 05:47:36 +00:00
Chris Lattner
99db0ab3df Wrap long lines 
llvm-svn: 21720
 2005-05-06 05:34:40 +00:00
Chris Lattner
b953e27f85 DCE intrinsic instructions without side effects. 
llvm-svn: 21719
 2005-05-06 05:27:34 +00:00
Chris Lattner
4f7bba1106 These intrinsics do not access memory 
llvm-svn: 21718
 2005-05-06 05:21:04 +00:00
Chris Lattner
2b4c801d10 Teach instcombine propagate zeroness through shl instructions, implementing 
and.ll:test31

llvm-svn: 21717
 2005-05-06 04:53:20 +00:00
Chris Lattner
d3797164f9 new testcases 
llvm-svn: 21716
 2005-05-06 04:52:46 +00:00
Chris Lattner
ead76729cc Implement shift.ll:test23. If we are shifting right then immediately truncating 
the result, turn signed shift rights into unsigned shift rights if possible.

This leads to later simplification and happens *often* in 176.gcc.  For example,
this testcase:

struct xxx { unsigned int code : 8; };
enum codes { A, B, C, D, E, F };
int foo(struct xxx *P) {
  if ((enum codes)P->code == A)
     bar();
}

used to be compiled to:

int %foo(%struct.xxx* %P) {
        %tmp.1 = getelementptr %struct.xxx* %P, int 0, uint 0           ; <uint*> [#uses=1]
        %tmp.2 = load uint* %tmp.1              ; <uint> [#uses=1]
        %tmp.3 = cast uint %tmp.2 to int                ; <int> [#uses=1]
        %tmp.4 = shl int %tmp.3, ubyte 24               ; <int> [#uses=1]
        %tmp.5 = shr int %tmp.4, ubyte 24               ; <int> [#uses=1]
        %tmp.6 = cast int %tmp.5 to sbyte               ; <sbyte> [#uses=1]
        %tmp.8 = seteq sbyte %tmp.6, 0          ; <bool> [#uses=1]
        br bool %tmp.8, label %then, label %UnifiedReturnBlock

Now it is compiled to:

        %tmp.1 = getelementptr %struct.xxx* %P, int 0, uint 0           ; <uint*> [#uses=1]
        %tmp.2 = load uint* %tmp.1              ; <uint> [#uses=1]
        %tmp.2 = cast uint %tmp.2 to sbyte              ; <sbyte> [#uses=1]
        %tmp.8 = seteq sbyte %tmp.2, 0          ; <bool> [#uses=1]
        br bool %tmp.8, label %then, label %UnifiedReturnBlock

which is the difference between this:

foo:
        subl $4, %esp
        movl 8(%esp), %eax
        movl (%eax), %eax
        shll $24, %eax
        sarl $24, %eax
        testb %al, %al
        jne .LBBfoo_2

and this:

foo:
        subl $4, %esp
        movl 8(%esp), %eax
        movl (%eax), %eax
        testb %al, %al
        jne .LBBfoo_2

This occurs 3243 times total in the External tests, 215x in povray,
6x in each f2c'd program, 1451x in 176.gcc, 7x in crafty, 20x in perl,
25x in gap, 3x in m88ksim, 25x in ijpeg.

Maybe this will cause a little jump on gcc tommorow :)

llvm-svn: 21715
 2005-05-06 04:18:52 +00:00
Chris Lattner
8f567bbc2a new testcase 
llvm-svn: 21714
 2005-05-06 04:11:32 +00:00
Chris Lattner
20b5bce229 Implement xor.ll:test22 
llvm-svn: 21713
 2005-05-06 02:07:39 +00:00
Chris Lattner
27f6e62cac implement and.ll:test30 and set.ll:test21 
llvm-svn: 21712
 2005-05-06 01:53:19 +00:00
Chris Lattner
88ef664af0 new testcase for unneeded and 
llvm-svn: 21711
 2005-05-06 01:52:52 +00:00
Chris Lattner
a2b995acae new testcase 
llvm-svn: 21710
 2005-05-06 01:51:05 +00:00
Chris Lattner
d38c600c9d implement or.ll:test20 
llvm-svn: 21709
 2005-05-06 00:58:50 +00:00
Chris Lattner
1f2cdab20f new testcase 
llvm-svn: 21708
 2005-05-06 00:58:09 +00:00
Misha Brukman
1996bf6ea5 * Order #includes alphabetically 
* Remove commented-out debug printouts

llvm-svn: 21707
 2005-05-05 23:45:17 +00:00
Misha Brukman
d29b27d73b Remove extra blank line 
llvm-svn: 21706
 2005-05-05 23:43:47 +00:00