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[AVR] Redefine the 'SBR' instruction as an alias 

This fixes a TableGen warning about duplicate bit patterns.

SBR
===

This is an alias of 'ORI Rd, K'.

llvm-svn: 341277
This commit is contained in:
Dylan McKay 2018-09-01 12:22:54 +00:00
parent d118024387
commit 97daa142f4
2 changed files with 13 additions and 14 deletions
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17
llvm/lib/Target/AVR/AVRInstrInfo.td
View File

@ -732,6 +732,14 @@ Defs = [SREG] in
// This operation is identical to a `Rd AND Rd`.
def : InstAlias<"tst\t$rd", (ANDRdRr GPR8:$rd, GPR8:$rd)>;
// SBR Rd, K
//
// Mnemonic alias to 'ORI Rd, K'. Same bit pattern, same operands,
// same everything.
def : InstAlias<"sbr\t$rd, $k",
(ORIRdK LD8:$rd, imm_ldi8:$k),
/* Disable display, so we don't override ORI */ 0>;
//===----------------------------------------------------------------------===//
// Jump instructions
//===----------------------------------------------------------------------===//
@ -1730,15 +1738,6 @@ def BLD : FRdB<0b00,
let Constraints = "$src = $rd",
Defs = [SREG] in
{
// SBR Rd, K
// Alias for ORI Rd, K
def SBRRdK : FRdK<0b0110,
(outs LD8:$rd),
(ins LD8:$src, imm_ldi8:$k),
"sbr\t$rd, $k",
[(set i8:$rd, (or i8:$src, imm:$k)),
(implicit SREG)]>;
// CBR Rd, K
// Alias for `ANDI Rd, COM(K)` where COM(K) is the complement of K.
// FIXME: This uses the 'complement' encoder. We need it to also use the

10
llvm/test/MC/AVR/inst-sbr.s
View File

@ -9,10 +9,10 @@ foo:
sbr r19, _start
; CHECK: sbr r17, 208 ; encoding: [0x10,0x6d]
; CHECK: sbr r24, 190 ; encoding: [0x8e,0x6b]
; CHECK: sbr r20, 173 ; encoding: [0x4d,0x6a]
; CHECK: sbr r31, 0 ; encoding: [0xf0,0x60]
; CHECK: ori r17, 208 ; encoding: [0x10,0x6d]
; CHECK: ori r24, 190 ; encoding: [0x8e,0x6b]
; CHECK: ori r20, 173 ; encoding: [0x4d,0x6a]
; CHECK: ori r31, 0 ; encoding: [0xf0,0x60]
; CHECK: sbr r19, _start ; encoding: [0x30'A',0x60]
; CHECK: ori r19, _start ; encoding: [0x30'A',0x60]
; CHECK: ; fixup A - offset: 0, value: _start, kind: fixup_ldi