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ARM: mark UBFX as not allowing PC.

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Strictly, it's unpredictable. But we don't quite model that yet and an error is
better than ignoring the issue. This one somehow got left out before though.

rdar://problem/15997748

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211490 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover 2014-06-23 09:20:02 +00:00
parent 139f2f1565
commit 6f7e87c751
2 changed files with 20 additions and 2 deletions
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4
lib/Target/ARM/ARMInstrInfo.td
View File

@ -3334,8 +3334,8 @@ def SBFX : I<(outs GPRnopc:$Rd),
let Inst{3-0} = Rn;
}
def UBFX : I<(outs GPR:$Rd),
(ins GPR:$Rn, imm0_31:$lsb, imm1_32:$width),
def UBFX : I<(outs GPRnopc:$Rd),
(ins GPRnopc:$Rn, imm0_31:$lsb, imm1_32:$width),
AddrMode1, 4, IndexModeNone, DPFrm, IIC_iUNAsi,
"ubfx", "\t$Rd, $Rn, $lsb, $width", "", []>,
Requires<[IsARM, HasV6T2]> {

18
test/MC/ARM/diagnostics.s
View File

@ -351,6 +351,24 @@
@ CHECK-ERRORS: ubfxgt r4, r5, #16, #17
@ CHECK-ERRORS: ^
@ Using pc for SBFX/UBFX
sbfx pc, r2, #1, #3
sbfx sp, pc, #4, #5
ubfx pc, r0, #0, #31
ubfx r14, pc, #1, #2
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: sbfx pc, r2, #1, #3
@ CHECK-ERRORS: ^
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: sbfx sp, pc, #4, #5
@ CHECK-ERRORS: ^
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: ubfx pc, r0, #0, #31
@ CHECK-ERRORS: ^
@ CHECK-ERRORS: error: invalid operand for instruction
@ CHECK-ERRORS: ubfx r14, pc, #1, #2
@ CHECK-ERRORS: ^
@ Out of order Rt/Rt2 operands for ldrd
ldrd r4, r3, [r8]
ldrd r4, r3, [r8, #8]!