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[AArch64][SVE] Asm: Support for saturating INC/DEC (32bit scalar) ins…
…tructions. The variants added by this patch are: - SQINC signed increment, e.g. sqinc x0, w0, all, mul #4 - SQDEC signed decrement, e.g. sqdec x0, w0, all, mul #4 - UQINC unsigned increment, e.g. uqinc w0, all, mul #4 - UQDEC unsigned decrement, e.g. uqdec w0, all, mul #4 This patch includes asmparser changes to parse a GPR64 as a GPR32 in order to satisfy the constraint check: x0 == GPR64(w0) in: sqinc x0, w0, all, mul #4 ^___^ (must match) Reviewers: rengolin, fhahn, SjoerdMeijer, samparker, javed.absar Reviewed By: fhahn Differential Revision: https://reviews.llvm.org/D47716 llvm-svn: 334980
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