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ARM: Add instruction aliases for the Thumb2 PLD/PLDW (literal) alternate form. 

See A8.8.127 in ARM DDI 0406C.b.

Related to <rdar://problem/14403733>.

llvm-svn: 186682
This commit is contained in:
Tilmann Scheller 2013-07-19 16:18:56 +00:00
parent ff6c5a5609
commit 34869503cb
3 changed files with 16 additions and 1 deletions
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7
llvm/lib/Target/ARM/ARMInstrThumb2.td
View File

@ -4428,7 +4428,12 @@ def : t2InstAlias<"ldrsh${p}.w $Rt, $addr",
def : t2InstAlias<"add${p} $Rd, pc, $imm",
(t2ADR rGPR:$Rd, imm0_4095:$imm, pred:$p)>;
// PLI with alternate literal form.
// PLD/PLDW/PLI with alternate literal form.
def : t2InstAlias<"pld${p} $addr",
(t2PLDpci t2ldr_pcrel_imm12:$addr, pred:$p)>;
def : InstAlias<"pldw${p} $addr",
(t2PLDWpci t2ldr_pcrel_imm12:$addr, pred:$p)>,
Requires<[IsThumb2,HasV7,HasMP]>;
def : InstAlias<"pli${p} $addr",
(t2PLIpci t2ldr_pcrel_imm12:$addr, pred:$p)>,
Requires<[IsThumb2,HasV7]>;

3
llvm/test/MC/ARM/basic-thumb2-instructions.s
View File

@ -1573,6 +1573,9 @@ _func:
@ FIXME: pld _foo @ encoding: [0x9f'A',0xf8'A',A,0xf0'A']
@ fixup A - offset: 0, value: _foo, kind: fixup_t2_ldst_pcrel_12
pld [pc,#-4095]
@ CHECK: pld [pc, #-4095] @ encoding: [0x1f,0xf8,0xff,0xff]
@------------------------------------------------------------------------------
@ PLD(register)

7
llvm/test/MC/ARM/thumb2-pldw.s Normal file
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@ -0,0 +1,7 @@
@ RUN: llvm-mc -triple=thumbv7-apple-darwin -mcpu=cortex-a8 -mattr=+mp -show-encoding < %s | FileCheck %s
@------------------------------------------------------------------------------
@ PLD(literal)
@------------------------------------------------------------------------------
pldw [pc,#-4095]
@ CHECK: pldw [pc, #-4095] @ encoding: [0x3f,0xf8,0xff,0xff]