Fix APInt::rotl and APInt::rotr so that they work correctly. Found while writing some code that tried to use them.

llvm-svn: 147134

APInt: update asserts for base-36

Hexatridecimal was added in r139695.

And fix the unittest that now triggers the assert.

llvm-svn: 146754

Fix unreachable return & simplify some branches.

llvm-svn: 145627

Correctly byte-swap APInts with bit-widths greater than 64.

llvm-svn: 145111

Fix APInt::operator*= so that it computes the correct result for large integers where there is unsigned overflow. Fix APFloat::toString so that it doesn't depend on the incorrect behavior in common

Fix APInt::operator*= so that it computes the correct result for large integers where there is unsigned overflow. Fix APFloat::toString so that it doesn't depend on the incorrect behavior in common cases (and computes the correct result in some rare cases). Fixes PR11086.

llvm-svn: 141441

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U is good enough

llvm-svn: 140166

Eliminate sign-comparison warnings in APInt

llvm-svn: 140158

Silence -Wsign-compare warnings from GCC.

llvm-svn: 140043

Add APInt support for converting to/from hexatridecimal strings

llvm-svn: 139695

Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity
errors like the one corrected by r135261. Migrate all LLVM callers of the old
constructor to the new one.

llvm-

Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ambiguity
errors like the one corrected by r135261. Migrate all LLVM callers of the old
constructor to the new one.

llvm-svn: 135431

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add option for literal formatting to APInt::toString()

toString() now takes an optional bool argument that,
depending on the radix, adds the appropriate prefix
to the integer's string representation

add option for literal formatting to APInt::toString()

toString() now takes an optional bool argument that,
depending on the radix, adds the appropriate prefix
to the integer's string representation that makes it into a
meaningful C literal, e.g.:

hexademical: '-f' becomes '-0xf'
octal: '77' becomes '077'
binary: '110' becomes '0b110'

Patch by nobled@dreamwidth.org!

llvm-svn: 133032

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fix a bug for hosts without round, PR8893.

llvm-svn: 131842

Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558

Constant folding support for calls to umul.with.overflow(), basically identical to the smul.with.overflow() code.

llvm-svn: 128379

Add an argument to APInt's magic udiv calculation to specify the number of bits that are known zero in the divided number.

This will come in handy soon.

llvm-svn: 127828

The signed version of our "magic number" computation for the integer approximation
of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approxima

The signed version of our "magic number" computation for the integer approximation
of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approximations over positive approximations in many
cases. Positive approximations require fewer operations beyond the multiplication.

In the case of division by 3, we still generate code that is a single instruction
larger than GCC's code.

llvm-svn: 126097

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PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead

PR5207: Change APInt methods trunc(), sext(), zext(), sextOrTrunc() and
zextOrTrunc(), and APSInt methods extend(), extOrTrunc() and new method
trunc(), to be const and to return a new value instead of modifying the
object in place.

llvm-svn: 121120

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APInt: microoptimize a few methods.

llvm-svn: 120912

PR5207: Rename overloaded APInt methods set(), clear(), flip() to
setAllBits(), setBit(unsigned), etc.

llvm-svn: 120564

PR5207: Make APInt::set(), APInt::clear() and APInt::flip() return void.

llvm-svn: 120413

Bounds-check APInt's operator[].

llvm-svn: 119708

fix a bug I introduced, no idea how this didn't repro right.

llvm-svn: 116462

add uadd_ov/usub_ov to apint, consolidate constant folding
logic to use the new APInt methods. Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

w

add uadd_ov/usub_ov to apint, consolidate constant folding
logic to use the new APInt methods. Among other things this
implements rdar://8501501 - llvm.smul.with.overflow.i32 should constant fold

which comes from "clang -ftrapv", originally brought to my attention from PR8221.

llvm-svn: 116457

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constify these methods.

llvm-svn: 116455

add a few operations for signed operations that also
return an overflow flag.

llvm-svn: 116452