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[ARM] Operands for PKHTB alias should be swapped 

When the shift immediate is zero, PKHTB is an alias for PKHBT, but the order of
the input operands needs to be swapped.

Differential Revision: http://reviews.llvm.org/D16288

llvm-svn: 258044
This commit is contained in:
Oliver Stannard 2016-01-18 11:56:35 +00:00
parent dcad424cd3
commit 9f68749eba
4 changed files with 8 additions and 8 deletions
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6
llvm/lib/Target/ARM/ARMInstrInfo.td
View File

@ -5595,13 +5595,13 @@ def : MnemonicAlias<"stmfd", "stmdb">;
def : MnemonicAlias<"stmia", "stm">;
def : MnemonicAlias<"stmea", "stm">;
// PKHBT/PKHTB with default shift amount. PKHTB is equivalent to PKHBT when the
// shift amount is zero (i.e., unspecified).
// PKHBT/PKHTB with default shift amount. PKHTB is equivalent to PKHBT with the
// input operands swapped when the shift amount is zero (i.e., unspecified).
def : InstAlias<"pkhbt${p} $Rd, $Rn, $Rm",
(PKHBT GPRnopc:$Rd, GPRnopc:$Rn, GPRnopc:$Rm, 0, pred:$p)>,
Requires<[IsARM, HasV6]>;
def : InstAlias<"pkhtb${p} $Rd, $Rn, $Rm",
(PKHBT GPRnopc:$Rd, GPRnopc:$Rn, GPRnopc:$Rm, 0, pred:$p)>,
(PKHBT GPRnopc:$Rd, GPRnopc:$Rm, GPRnopc:$Rn, 0, pred:$p)>,
Requires<[IsARM, HasV6]>;
// PUSH/POP aliases for STM/LDM

6
llvm/lib/Target/ARM/ARMInstrThumb2.td
View File

@ -4557,13 +4557,13 @@ def : t2InstAlias<"mvn${s}${p} $Rd, $Rm",
def : t2InstAlias<"mvn${s}${p} $Rd, $ShiftedRm",
(t2MVNs rGPR:$Rd, t2_so_reg:$ShiftedRm, pred:$p, cc_out:$s)>;
// PKHBT/PKHTB with default shift amount. PKHTB is equivalent to PKHBT when the
// shift amount is zero (i.e., unspecified).
// PKHBT/PKHTB with default shift amount. PKHTB is equivalent to PKHBT with the
// input operands swapped when the shift amount is zero (i.e., unspecified).
def : InstAlias<"pkhbt${p} $Rd, $Rn, $Rm",
(t2PKHBT rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, 0, pred:$p)>,
Requires<[HasT2ExtractPack, IsThumb2]>;
def : InstAlias<"pkhtb${p} $Rd, $Rn, $Rm",
(t2PKHBT rGPR:$Rd, rGPR:$Rn, rGPR:$Rm, 0, pred:$p)>,
(t2PKHBT rGPR:$Rd, rGPR:$Rm, rGPR:$Rn, 0, pred:$p)>,
Requires<[HasT2ExtractPack, IsThumb2]>;
// PUSH/POP aliases for STM/LDM

2
llvm/test/MC/ARM/basic-arm-instructions.s
View File

@ -1749,7 +1749,7 @@ Lforward:
@ CHECK: pkhbt r2, r2, r3 @ encoding: [0x13,0x20,0x82,0xe6]
@ CHECK: pkhbt r2, r2, r3, lsl #15 @ encoding: [0x93,0x27,0x82,0xe6]
@ CHECK: pkhbt r2, r2, r3 @ encoding: [0x13,0x20,0x82,0xe6]
@ CHECK: pkhbt r2, r3, r2 @ encoding: [0x12,0x20,0x83,0xe6]
@ CHECK: pkhtb r2, r2, r3, asr #31 @ encoding: [0xd3,0x2f,0x82,0xe6]
@ CHECK: pkhtb r2, r2, r3, asr #15 @ encoding: [0xd3,0x27,0x82,0xe6]

2
llvm/test/MC/ARM/basic-thumb2-instructions.s
View File

@ -1731,7 +1731,7 @@ _func:
@ CHECK: pkhbt r2, r2, r3 @ encoding: [0xc2,0xea,0x03,0x02]
@ CHECK: pkhbt r2, r2, r3, lsl #15 @ encoding: [0xc2,0xea,0xc3,0x32]
@ CHECK: pkhbt r2, r2, r3 @ encoding: [0xc2,0xea,0x03,0x02]
@ CHECK: pkhbt r2, r3, r2 @ encoding: [0xc3,0xea,0x02,0x02]
@ CHECK: pkhtb r2, r2, r3, asr #31 @ encoding: [0xc2,0xea,0xe3,0x72]
@ CHECK: pkhtb r2, r2, r3, asr #15 @ encoding: [0xc2,0xea,0xe3,0x32]