Mark some pattern-less instructions as neverHasSideEffects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73252 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 680e772..cc9f1a5 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -451,7 +451,7 @@
/// the function. The first operand is the ID# for this instruction, the second
/// is the index into the MachineConstantPool that this is, the third is the
/// size in bytes of this constant pool entry.
-let isNotDuplicable = 1 in
+let neverHasSideEffects = 1, isNotDuplicable = 1 in
def CONSTPOOL_ENTRY :
PseudoInst<(outs), (ins cpinst_operand:$instid, cpinst_operand:$cpidx,
i32imm:$size),
@@ -771,6 +771,7 @@
// Move Instructions.
//
+let neverHasSideEffects = 1 in
def MOVr : AsI1<0b1101, (outs GPR:$dst), (ins GPR:$src), DPFrm,
"mov", " $dst, $src", []>, UnaryDP;
def MOVs : AsI1<0b1101, (outs GPR:$dst), (ins so_reg:$src), DPSoRegFrm,
@@ -946,6 +947,7 @@
[(set GPR:$dst, (add (mul GPR:$a, GPR:$b), GPR:$c))]>;
// Extra precision multiplies with low / high results
+let neverHasSideEffects = 1 in {
def SMULL : AsMul1I<0b0000110, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b),
"smull", " $ldst, $hdst, $a, $b", []>;
@@ -967,6 +969,7 @@
(ins GPR:$a, GPR:$b),
"umaal", " $ldst, $hdst, $a, $b", []>,
Requires<[IsARM, HasV6]>;
+} // neverHasSideEffects
// Most significant word multiply
def SMMUL : AMul2I <0b0111010, (outs GPR:$dst), (ins GPR:$a, GPR:$b),