addi r3, r3, -1
instead of
addi r3, r3, 1
for 'sub int X, 1'.
Secondarily, this fixes several cases where we could crash given an unsigned
constant. And fixes a couple of minor missed optimization cases, such as
xor X, ~0U -> not X
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18379 91177308-0d34-0410-b5e6-96231b3b80d8
if (x) {
code
...
} else {
code
...
}
Turn it into:
code
if (x) {
...
} else {
...
}
This reduces code size and in some common cases allows us to completely
eliminate the conditional. This turns several if/then/else blocks in loops
into straightline code in 179.art, turning the loops into single basic blocks
(good for modsched even!).
Maybe now brg will leave me alone ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18366 91177308-0d34-0410-b5e6-96231b3b80d8
1. Nothing should happen on "make all". Doc generation is quick, but we
don't want to do it unless we're installing.
2. Correct a dependency for the *.ps files .. didn't notice this before
because of cruft in my directory. It failed on a clean build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18359 91177308-0d34-0410-b5e6-96231b3b80d8
library into the address space permanently. SearchForAddressOfSymbol looks
in all previously permanently loaded libraries and any currently open
libraries for a symbol, instead of just one library like GetAddressOfSymbol
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18354 91177308-0d34-0410-b5e6-96231b3b80d8
changing directory first. Also make sure that we don't attempt to run
config.status if the recheck didn't work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18351 91177308-0d34-0410-b5e6-96231b3b80d8
our own library so that it is magically hidden and we don't have to depend
on linking with -lltdl option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18342 91177308-0d34-0410-b5e6-96231b3b80d8
to Brian and the Sun compiler for pointing out that the obvious works :)
This also enables folding all long comparisons into setcc and branch
instructions: before we could only do == and !=
For example, for:
void test(unsigned long long A, unsigned long long B) {
if (A < B) foo();
}
We now generate:
test:
subl $4, %esp
movl %esi, (%esp)
movl 8(%esp), %eax
movl 12(%esp), %ecx
movl 16(%esp), %edx
movl 20(%esp), %esi
subl %edx, %eax
sbbl %esi, %ecx
jae .LBBtest_2 # UnifiedReturnBlock
.LBBtest_1: # then
call foo
movl (%esp), %esi
addl $4, %esp
ret
.LBBtest_2: # UnifiedReturnBlock
movl (%esp), %esi
addl $4, %esp
ret
Instead of:
test:
subl $12, %esp
movl %esi, 8(%esp)
movl %ebx, 4(%esp)
movl 16(%esp), %eax
movl 20(%esp), %ecx
movl 24(%esp), %edx
movl 28(%esp), %esi
cmpl %edx, %eax
setb %al
cmpl %esi, %ecx
setb %bl
cmove %ax, %bx
testb %bl, %bl
je .LBBtest_2 # UnifiedReturnBlock
.LBBtest_1: # then
call foo
movl 4(%esp), %ebx
movl 8(%esp), %esi
addl $12, %esp
ret
.LBBtest_2: # UnifiedReturnBlock
movl 4(%esp), %ebx
movl 8(%esp), %esi
addl $12, %esp
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18330 91177308-0d34-0410-b5e6-96231b3b80d8
* Get rid of appending -lbz2 and -lz to ExtraLibs now that we don't need
them any more.
* Fix the dist-check target so that EXTRA_DIST can be defined AFTER the
include of Makefile.common. This is needed because Makefile.common
provides variable definitions that may need to be used in computing the
value of EXTRA_DIST.
* Clean up some "distdir" target output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18329 91177308-0d34-0410-b5e6-96231b3b80d8
* organize programs we test for properly
* add new programs needed for documentation generation
* Adjust install paths so llvm stuff doesn't muck up /usr/local or /usr if
$prefix is set to those.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18327 91177308-0d34-0410-b5e6-96231b3b80d8
