Chandler voiced some concern with checking this in without some
discussion first. Reverting for now.
This reverts r203703, r203704, r203708, and 203709.
llvm-svn: 203723
Extend what's currently done for shift because the HW performs this masking
implicitly:
(rotl:i32 x, (and y, 31)) -> (rotl:i32 x, y)
I use the newly factored out multiclass that was only supporting shifts so
far.
For testing I extended my testcase for the new rotation idiom.
<rdar://problem/15295856>
llvm-svn: 203718
They're already defined in ia32intrin.h, and this would cause including Intrin.h
in 64-bit mode to fail because of conflicting types. Update ms-intrin.cpp to
also run in 64-bit mode to catch things like this.
llvm-svn: 203714
This will break without the corresponding change in clang, which I've
reverted until I figure out how to get it to link properly.
This reverts commit r203710.
llvm-svn: 203713
This updates CodeGenPGO to use the ProfileDataReader introduced to
llvm in r203703 and the new API for writing out the profile introduced
to compiler-rt in r203710.
llvm-svn: 203711
On ELF and COFF an alias is just another name for a position in the file.
There is no way to refer to a position in another file, so an alias to
undefined is meaningless.
MachO currently doesn't support aliases. The spec has a N_INDR, which when
implemented will have a different set of restrictions. Adding support for
it shouldn't be harder than any other IR extension.
For now, having the IR represent what is actually possible with current
tools makes it easier to fix the design of GlobalAlias.
llvm-svn: 203705
This replaces the llvm-profdata tool with a version that uses the
recently introduced Profile library. The new tool has the ability to
generate and summarize profdata files as well as merging them.
llvm-svn: 203704
This provides a library to work with the instrumentation based
profiling format that is used by clang's -fprofile-instr-* options and
by the llvm-profdata tool. This is a binary format, rather than the
textual one that's currently in use.
The tests are in the subsequent commits that use this.
llvm-svn: 203703
This allows us to generate table lookups for code such as:
unsigned test(unsigned x) {
switch (x) {
case 100: return 0;
case 101: return 1;
case 103: return 2;
case 105: return 3;
case 107: return 4;
case 109: return 5;
case 110: return 6;
default: return f(x);
}
}
Since cases 102, 104, etc. are not constants, the lookup table has holes
in those positions. We therefore guard the table lookup with a bitmask check.
Patch by Jasper Neumann!
llvm-svn: 203694
The peephole (shift x, (and y, 31)) -> (shift x, y) is repeated for each
integer type and each shift variant.
To improve this a new multiclass is added that covers all integer types. The
shift patterns are now instantiated from this. I am planning to add new
instances for rotates as well.
No functional change intended:
* test/CodeGen/X86/shift-and.ll provides coverage
* Compared the expanded tablegen output and matched up the defs for these
Pat<>s before and after
llvm-svn: 203685
Rafael Espindola