ARM: recommit r237590: allow jump tables to be placed as constant islands.

[oota-llvm.git] / lib / Target / ARM / ARMInstrInfo.td

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index c87acd761e9a31b44fe258826f405018c3b55699..4ae416ec12a5111b51d4876ef20e4266a948bcdd 100644 (file)
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -1834,6 +1834,32 @@ def CONSTPOOL_ENTRY :
 PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
                     i32imm:$size), NoItinerary, []>;
 
+/// A jumptable consisting of direct 32-bit addresses of the destination basic
+/// blocks (either absolute, or relative to the start of the jump-table in PIC
+/// mode). Used mostly in ARM and Thumb-1 modes.
+def JUMPTABLE_ADDRS :
+PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
+                        i32imm:$size), NoItinerary, []>;
+
+/// A jumptable consisting of 32-bit jump instructions. Used for Thumb-2 tables
+/// that cannot be optimised to use TBB or TBH.
+def JUMPTABLE_INSTS :
+PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
+                        i32imm:$size), NoItinerary, []>;
+
+/// A jumptable consisting of 8-bit unsigned integers representing offsets from
+/// a TBB instruction.
+def JUMPTABLE_TBB :
+PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
+                        i32imm:$size), NoItinerary, []>;
+
+/// A jumptable consisting of 16-bit unsigned integers representing offsets from
+/// a TBH instruction.
+def JUMPTABLE_TBH :
+PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
+                        i32imm:$size), NoItinerary, []>;
+
+
 // FIXME: Marking these as hasSideEffects is necessary to prevent machine DCE
 // from removing one half of the matched pairs. That breaks PEI, which assumes
 // these will always be in pairs, and asserts if it finds otherwise. Better way?
@@ -2232,7 +2258,7 @@ let isBranch = 1, isTerminator = 1 in {
                 [(br bb:$target)], (Bcc br_target:$target, (ops 14, zero_reg))>,
                 Sched<[WriteBr]>;
 
-    let isNotDuplicable = 1, isIndirectBranch = 1 in {
+    let Size = 4, isNotDuplicable = 1, isIndirectBranch = 1 in {
     def BR_JTr : ARMPseudoInst<(outs),
                       (ins GPR:$target, i32imm:$jt),
                       0, IIC_Br,