llvm-svn: 20231

for 0.0 and -0.0.

llvm-svn: 20230

Don't sink argument loads into loops or other bad places.  This disables folding of argument loads with instructions that are not in the entry block.

llvm-svn: 20228

and handle incomplete control dependences correctly.  This fixes:

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a missed optimization

Regression/Transforms/ADCE/dead-phi-edge.ll
  -> a compiler crash distilled from QT4

llvm-svn: 20227

and PR515.

llvm-svn: 20224

llvm-svn: 20208

llvm-svn: 20207

for the suggestion! :)

llvm-svn: 20203

llvm-svn: 20202

llvm-svn: 20201

handling zero length files a little more intelligently. If both files are
zero length then we return 0 (true) indicating a match. If only one of the
files is zero length then we return 1 (false) indicating that the files
differ. If the files don't agree in length then they can't match so we
skip the first loop that looks for a quick match.

llvm-svn: 20200

to save and restore the LR register on entry and exit of a leaf function
that needed to access globals or the constant pool.  This should hopefully
fix oscar from sending the PPC tester spinning out of control.

llvm-svn: 20197

llvm-svn: 20195

llvm-svn: 20194

void %test(int** %P) {
  %A = volatile load int** %P
  ret void
}

void %test2(int*** %Q) {
  %P = load int*** %Q
  volatile store int** %P, int*** %Q
  ret void
}

instead of emitting:

void test(int **l1_P) {
  int *l2_A;

  l2_A = (int **((volatile int **)l1_P));
  return;
}
void test2(int ***l2_Q) {
  int **l1_P;

  l1_P = *l2_Q;
  *((volatile int ***)l2_Q) = l1_P;
  return;
}

... which is loading/storing volatile pointers, not through volatile pointers,
emit this (which is right):

void test(int **l1_P) {
  int *l3_A;

  l3_A = *((int * volatile*)l1_P);
  return;
}
void test2(int ***l2_Q) {
  int **l1_P;

  l1_P = *l2_Q;
  *((int ** volatile*)l2_Q) = l1_P;
  return;
}

llvm-svn: 20191

llvm-svn: 20184

prints:

getelementptr (int* %A, int -1)

as: "(A) - 4" instead of "(A) + 18446744073709551612", which makes the
assembler much happier.

This fixes test/Regression/CodeGen/X86/2005-02-14-IllegalAssembler.ll,
and Benchmarks/Prolangs-C/cdecl with LLC on X86.

llvm-svn: 20183

llvm-svn: 20181

printing help output or version info.

llvm-svn: 20180

llvm-svn: 20179

Volatile loads and stores need to emit volatile pointer operations in C.

llvm-svn: 20177

llvm-svn: 20172

llvm-svn: 20170

llvm-svn: 20168

This causes garbage to be printed out after error messages.

llvm-svn: 20165

both cases they are looking for non-external variables/functions that do
not have internal linkage. Using "!isExternal()" is a little more
understandable than "hasInitializer()"

llvm-svn: 20155

llvm-svn: 20154

llvm-svn: 20153

Otherwise, clients who call ParseAllFunctionBodies will attempt to parse
the function bodies twice, which is (uh) very very bad (tm).

This fixes gccld on python.

llvm-svn: 20152

table for archives in common cases, and prevents trying to resolve a
external reference with an internal reference.  This shrinks the libpython.a
symbol table from 126302 to 19770 bytes.

llvm-svn: 20151

llvm-svn: 20148

infinite loops (using the new replaceSymbolicValuesWithConcrete method).

This patch reverts this patch:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050131/023830.html

... which was an attempted fix for this problem.  Unfortunately, that patch
caused test/Regression/Transforms/IndVarsSimplify/exit_value_tests.llx to fail
and slightly castrated the entire analysis.  This patch fixes it right.

This patch is dedicated to jeffc, for making me deal with this.  :)

llvm-svn: 20146

llvm-svn: 20143

llvm-svn: 20142

llvm-svn: 20141

llvm-svn: 20137

This finally resolves PR502, PR450,
and test/Regression/Linker/2005-02-12-ConstantGlobals{,-2}.ll correctly

llvm-svn: 20135

and PR504.

llvm-svn: 20129

llvm-svn: 20110

global with an alloca, which eventually gets promoted into a
register. This enables a lot of other optimizations later on.

llvm-svn: 20109