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Fix range representation for C.ADDI16SP immediate #1634

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Sep 6, 2024
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Fix range representation for C.ADDI16SP immediate #1634

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2 changes: 1 addition & 1 deletion src/c-st-ext.adoc
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Original file line number Diff line number Diff line change
Expand Up @@ -608,7 +608,7 @@ only valid when `_rd_≠x0`; the code points with
C.ADDI16SP shares the opcode with C.LUI, but has a destination field of
`x2`. C.ADDI16SP adds the non-zero sign-extended 6-bit immediate to the
value in the stack pointer (`sp=x2`), where the immediate is scaled to
represent multiples of 16 in the range (-512,496). C.ADDI16SP is used to
represent multiples of 16 in the range [-512, 496]. C.ADDI16SP is used to
adjust the stack pointer in procedure prologues and epilogues. It
expands into `addi x2, x2, nzimm[9:4]`. C.ADDI16SP is only valid when
_nzimm_≠0; the code point with _nzimm_=0 is reserved.
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