[AsmPrinter] Reject ptrtoint to larger size in lowerConstant()

When using a ptrtoint to a size larger than the pointer width in a
global initializer, we currently create a ptr & low_bit_mask style
M

[AsmPrinter] Reject ptrtoint to larger size in lowerConstant()

When using a ptrtoint to a size larger than the pointer width in a
global initializer, we currently create a ptr & low_bit_mask style
MCExpr, which will later result in a relocation error during object
file emission.

This patch rejects the constant expression already during
lowerConstant(), which results in a much clearer error message
that references the constant expression at fault.

This fixes https://github.com/llvm/llvm-project/issues/56400,
for certain definitions of "fix".

Differential Revision: https://reviews.llvm.org/D130366

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[AsmPrinter] Further restrict expressions supported in global initializers

lowerConstant() currently accepts a number of constant expressions
which have corresponding MC expressions, but which canno

[AsmPrinter] Further restrict expressions supported in global initializers

lowerConstant() currently accepts a number of constant expressions
which have corresponding MC expressions, but which cannot be
evaluated as a relocatable expression (unless the operands are
constant, in which case we'll just fold the expression to a constant).

The motivation here is to clarify which constant expressions are
really needed for https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179,
and in particular clarify that we do not need to support any
division expressions, which are particularly problematic.

Differential Revision: https://reviews.llvm.org/D127972

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[X86] Migrate tests to use opaque pointers (NFC)

Test updates were performed using:
https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34

These are only the test updates where the test pas

[X86] Migrate tests to use opaque pointers (NFC)

Test updates were performed using:
https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34

These are only the test updates where the test passed without
further modification (which is almost all of them, as the backend
is largely pointer-type agnostic).

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[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cas

[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
line = match.group(1)
line += match.group(4)
line += ", "
line += match.group(2)
return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
sys.stdout.write(line[off:match.start()])
sys.stdout.write(conv(match))
off = match.end()
sys.stdout.write(line[off:])

llvm-svn: 232184

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Canonicalize ConstantInts to the right operand of commutative
operators.

The test difference is just due to the multiplication operands
being commuted (and thus requiring a more elaborate match). In

Canonicalize ConstantInts to the right operand of commutative
operators.

The test difference is just due to the multiplication operands
being commuted (and thus requiring a more elaborate match). In
optimized code, that expression would be folded.

llvm-svn: 96816

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When CodeGen'ing unoptimized code, there may be unfolded constant expressions
in global initializers. Instead of aborting, attempt to fold them on the
spot. If folding succeeds, emit the folded expre

When CodeGen'ing unoptimized code, there may be unfolded constant expressions
in global initializers. Instead of aborting, attempt to fold them on the
spot. If folding succeeds, emit the folded expression instead.

This fixes PR6255.

llvm-svn: 95583

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Change constantexpr global variable initializers to convert the constants
to MCExpr then emit them through MCStreamer with EmitValue. I think all
global variable initializers are now going through m

Change constantexpr global variable initializers to convert the constants
to MCExpr then emit them through MCStreamer with EmitValue. I think all
global variable initializers are now going through mcstreamer.

llvm-svn: 94293

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Eliminate more uses of llvm-as and llvm-dis.

llvm-svn: 81290

fix a problem Eli noticed where we would compile the attached ptrtoint
to:

.quad X

even on a 32-bit system, where X is not 64-bits. There isn't much that
we can do here, so we just print:

.quad (

fix a problem Eli noticed where we would compile the attached ptrtoint
to:

.quad X

even on a 32-bit system, where X is not 64-bits. There isn't much that
we can do here, so we just print:

.quad ((X) & 4294967295)

instead.

llvm-svn: 77818

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