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[Sparc] Add support for flush instruction.

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Differential Revision: http://reviews.llvm.org/D9833

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241460 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
James Y Knight 2015-07-06 16:01:04 +00:00
parent 297f505009
commit d32974f9dc
3 changed files with 27 additions and 0 deletions
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3
lib/Target/Sparc/SparcInstrAliases.td
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@ -306,6 +306,9 @@ def : InstAlias<"mov $rs2, $rd", (ORrr IntRegs:$rd, G0, IntRegs:$rs2)>;
// mov simm13, rd -> or %g0, simm13, rd
def : InstAlias<"mov $simm13, $rd", (ORri IntRegs:$rd, G0, i32imm:$simm13)>;
// flush -> flush %g0
def : InstAlias<"flush", (FLUSH), 0>;
// set value, rd
// (turns into a sequence of sethi+or, depending on the value)
// def : InstAlias<"set $val, $rd", (ORri IntRegs:$rd, (SETHIi (HI22 imm:$val)), (LO10 imm:$val))>;

14
lib/Target/Sparc/SparcInstrInfo.td
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@ -828,6 +828,20 @@ let rd = 0 in
def UNIMP : F2_1<0b000, (outs), (ins i32imm:$imm22),
"unimp $imm22", []>;
// Section B.32 - Flush Instruction Memory
let rd = 0 in {
def FLUSHrr : F3_1<2, 0b111011, (outs), (ins MEMrr:$addr),
"flush $addr", []>;
def FLUSHri : F3_2<2, 0b111011, (outs), (ins MEMri:$addr),
"flush $addr", []>;
// The no-arg FLUSH is only here for the benefit of the InstAlias
// "flush", which cannot seem to use FLUSHrr, due to the inability
// to construct a MEMrr with fixed G0 registers.
let rs1 = 0, rs2 = 0 in
def FLUSH : F3_1<2, 0b111011, (outs), (ins), "flush %g0", []>;
}
// Section B.33 - Floating-point Operate (FPop) Instructions
// Convert Integer to Floating-point Instructions, p. 141

10
test/MC/Sparc/sparc-mem-instructions.s
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@ -72,3 +72,13 @@
st %o2, [%g1]
! CHECK: sta %o2, [%i0+%l6] 131 ! encoding: [0xd4,0xa6,0x10,0x76]
sta %o2, [%i0 + %l6] 131
! CHECK: flush %g1+%g2 ! encoding: [0x81,0xd8,0x40,0x02]
flush %g1 + %g2
! CHECK: flush %g1+8 ! encoding: [0x81,0xd8,0x60,0x08]
flush %g1 + 8
! CHECK: flush %g1 ! encoding: [0x81,0xd8,0x40,0x00]
flush %g1
! Not specified in manual, but accepted by gas.
! CHECK: flush %g0 ! encoding: [0x81,0xd8,0x00,0x00]
flush