of LCSSA.  This results several times the number of unswitchings occurring on
tests such and timberwolfmc, unix-tbl, and ldecod.

llvm-svn: 28912

Simplify X86CompilationCallback: always align to 16-byte boundary; don't save EAX/EDX if unnecessary.

llvm-svn: 28910

code in sections other than ".text", including weak sections like ctors and
dtors.

llvm-svn: 28909

llvm-svn: 28908

llvm-svn: 28907

llvm-svn: 28906

llvm-svn: 28901

vtables for (e.g.) Instruction from being emitted into every .o file.

llvm-svn: 28898

llvm-svn: 28897

llvm-svn: 28896

llvm-svn: 28895

llvm-svn: 28893

llvm-svn: 28892

llvm-svn: 28890

llvm-svn: 28889

llvm-svn: 28888

llvm-svn: 28887

llvm-svn: 28886

void test6() {
  Y = 0xABCD0123BCDE4567;
}

into:

_test6:
        lis r2, -21555
        lis r3, ha16(_Y)
        ori r2, r2, 291
        rldicr r2, r2, 32, 31
        oris r2, r2, 48350
        ori r2, r2, 17767
        std r2, lo16(_Y)(r3)
        blr

llvm-svn: 28885

set, so disable the pattern in that case.

llvm-svn: 28884

Split imm16Shifted into a sext/zext form for 64-bit support.
Add some patterns for immediate formation.  For example, we now compile this:

static unsigned long long Y;
void test3() {
  Y = 0xF0F00F00;
}

into:

_test3:
        li r2, 3840
        lis r3, ha16(_Y)
        xoris r2, r2, 61680
        std r2, lo16(_Y)(r3)
        blr

GCC produces:

_test3:
        li r0,0
        lis r2,ha16(_Y)
        ori r0,r0,61680
        sldi r0,r0,16
        ori r0,r0,3840
        std r0,lo16(_Y)(r2)
        blr

llvm-svn: 28883

llvm-svn: 28881

llvm-svn: 28880

static unsigned long long X, Y;
void test1() {
  X = Y;
}

into:

_test1:
        lis r2, ha16(_Y)
        lis r3, ha16(_X)
        ld r2, lo16(_Y)(r2)
        std r2, lo16(_X)(r3)
        blr

llvm-svn: 28879

llvm-svn: 28874

removed, tblgen produces identical output to with them in.

llvm-svn: 28867

llvm-svn: 28866

llvm-svn: 28864

llvm-svn: 28862

llvm-svn: 28861

llvm-svn: 28860

Do partial inlining in BU.  This resolves more call sites.  Also add options to merge in globals during recursion and to back annotate DSNodes when function pointers are resolved.  This makes PA work for a whole lot more things (unresolved call sites being what has been killing various DSA based passes)

llvm-svn: 28859

llvm-svn: 28858

Fix a bug, don't drop indirect call sites, especially if there is nothing known about them yet, and restore a simple version of a removed function

llvm-svn: 28857

llvm-svn: 28855

fixes test/Regression/CodeGen/ARM/ret_arg5.ll

llvm-svn: 28854

llvm-svn: 28853

"LCSSA" phi node causes indvars to break dominance properties.  This fixes
causes indvars to avoid inserting aggressive code in this case, instead
indvars should be fixed to be more aggressive in the face of lcssa phi's.

llvm-svn: 28850

llvm-svn: 28848

magic to work.

llvm-svn: 28847