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Conditional branch is not a barrier.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37103 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-05-16 07:45:54 +00:00
parent c76d4410ab
commit aeafca0a25
1 changed files with 6 additions and 4 deletions
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10
lib/Target/ARM/ARMInstrInfo.td
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@@ -590,14 +590,12 @@ let isCall = 1, noResults = 1,
} }
} }
let isBranch = 1, isTerminator = 1, noResults = 1, isBarrier = 1 in { let isBranch = 1, isTerminator = 1, noResults = 1 in {
// B can changed into a Bcc, but it is not "predicated". // B can changed into a Bcc, but it is not "predicated".
let isBarrier = 1 in {
def B : AXI<(ops brtarget:$dst), "b $dst", def B : AXI<(ops brtarget:$dst), "b $dst",
[(br bb:$dst)]>; [(br bb:$dst)]>;
def Bcc : AXI<(ops brtarget:$dst, ccop:$cc), "b$cc $dst",
[(ARMbrcond bb:$dst, imm:$cc)]>;
def BR_JTr : JTI<(ops GPR:$dst, jtblock_operand:$jt, i32imm:$id), def BR_JTr : JTI<(ops GPR:$dst, jtblock_operand:$jt, i32imm:$id),
"mov", " pc, $dst \n$jt", "mov", " pc, $dst \n$jt",
[(ARMbrjt GPR:$dst, tjumptable:$jt, imm:$id)]>; [(ARMbrjt GPR:$dst, tjumptable:$jt, imm:$id)]>;
@@ -609,6 +607,10 @@ let isBranch = 1, isTerminator = 1, noResults = 1, isBarrier = 1 in {
"add", " pc, $dst, $idx \n$jt", "add", " pc, $dst, $idx \n$jt",
[(ARMbrjt (add GPR:$dst, GPR:$idx), tjumptable:$jt, [(ARMbrjt (add GPR:$dst, GPR:$idx), tjumptable:$jt,
imm:$id)]>; imm:$id)]>;
}
def Bcc : AXI<(ops brtarget:$dst, ccop:$cc), "b$cc $dst",
[(ARMbrcond bb:$dst, imm:$cc)]>;
} }
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//