This patch replaces signed integer types with signless ones:
1. [US]Byte -> Int8
2. [U]Short -> Int16
3. [U]Int -> Int32
4. [U]Long -> Int64.
5. Removal of isSigned, isUnsigned, getSignedVersion, getUnsignedVersion
and other methods related to signedness. In a few places this warranted
identifying the signedness information from other sources.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32785 91177308-0d34-0410-b5e6-96231b3b80d8
Fix this by ensuring that a bitcast is inserted to do sign switching. This
is only temporarily needed as the merging of signed and unsigned is next
on the SignlessTypes plate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32757 91177308-0d34-0410-b5e6-96231b3b80d8
Don't allow CmpInst instances to be processed in FoldSelectOpOp because
you can't easily swap their operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32753 91177308-0d34-0410-b5e6-96231b3b80d8
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32751 91177308-0d34-0410-b5e6-96231b3b80d8
converted, we lose a static initializer. This also allows GCC to emit warnings
about unused statistics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32690 91177308-0d34-0410-b5e6-96231b3b80d8
creation. These changes are still temporary but at least this pushes
knowledge of signedness out closer to where it can be determined properly
and allows signedness to be removed from VMCore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32654 91177308-0d34-0410-b5e6-96231b3b80d8
used to determine whether a ZExt or SExt cast is performed. Instead, pass
an "isSigned" bool to the function and determine its value from the opcode
of the cast involved.
Also, clean up some cruft from previous patches.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32548 91177308-0d34-0410-b5e6-96231b3b80d8
The cast patch introduced the possibility that the wrong cast opcode
could be used and that this transform could trigger on different kinds
of cast operations. This patch rectifies that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32538 91177308-0d34-0410-b5e6-96231b3b80d8
Rename getZeroExtend and getSignExtend to getZExt and getSExt to match
the the casting mnemonics in the rest of LLVM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32514 91177308-0d34-0410-b5e6-96231b3b80d8
unsigned short swp(unsigned short a) {
return ((a & 0xff00) >> 8 | (a & 0x00ff) << 8);
}
as an idiom for bswap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32011 91177308-0d34-0410-b5e6-96231b3b80d8
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31931 91177308-0d34-0410-b5e6-96231b3b80d8
This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31542 91177308-0d34-0410-b5e6-96231b3b80d8
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31195 91177308-0d34-0410-b5e6-96231b3b80d8
