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| author | Tim Northover <tnorthover@apple.com> | 2014-04-30 11:19:15 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2014-04-30 11:19:15 +0000 |
| commit | 2a2cce79be98f83cd29940471c9b58c5acb2cc58 (patch) | |
| tree | f9da6da6d973c97a818bf777ecf90b63b493de1a /lib | |
| parent | 491f476b8bf5d2b201733c27a079a9a7015ffc44 (diff) | |
| download | llvm-2a2cce79be98f83cd29940471c9b58c5acb2cc58.tar.gz llvm-2a2cce79be98f83cd29940471c9b58c5acb2cc58.tar.bz2 llvm-2a2cce79be98f83cd29940471c9b58c5acb2cc58.tar.xz | |
ARM64: print canonical syntax for add/sub (imm) instructions.
Since these instructions only accept a 12-bit immediate, possibly shifted left
by 12, the canonical syntax used by the architecture reference manual is "#N {,
lsl #12 }". We should accept an immediate that has already been shifted, (e.g.
Also, print a comment giving the full addend since it can be helpful.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207633 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/ARM64/InstPrinter/ARM64InstPrinter.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Target/ARM64/InstPrinter/ARM64InstPrinter.cpp b/lib/Target/ARM64/InstPrinter/ARM64InstPrinter.cpp index a07b7be00d..875c758b1a 100644 --- a/lib/Target/ARM64/InstPrinter/ARM64InstPrinter.cpp +++ b/lib/Target/ARM64/InstPrinter/ARM64InstPrinter.cpp @@ -1104,10 +1104,12 @@ void ARM64InstPrinter::printAddSubImm(const MCInst *MI, unsigned OpNum, assert(Val == MO.getImm() && "Add/sub immediate out of range!"); unsigned Shift = ARM64_AM::getShiftValue(MI->getOperand(OpNum + 1).getImm()); - O << '#' << (Val << Shift); - // Distinguish "0, lsl #12" from "0, lsl #0". - if (Val == 0 && Shift != 0) + O << '#' << Val; + if (Shift != 0) printShifter(MI, OpNum + 1, O); + + if (CommentStream) + *CommentStream << "=#" << (Val << Shift) << '\n'; } else { assert(MO.isExpr() && "Unexpected operand type!"); O << *MO.getExpr(); |