[X86] Mark pseudo instruction TEST8ri_NOEREX as hasSIdeEffects=0.
Also, add a case clause in X86InstrInfo::shouldScheduleAdjacent to enable
macro-fusion.
<rdar://problem/15680770>
llvm-svn: 212747
diff --git a/llvm/lib/Target/X86/X86InstrArithmetic.td b/llvm/lib/Target/X86/X86InstrArithmetic.td
index 368e14b..f2574cc 100644
--- a/llvm/lib/Target/X86/X86InstrArithmetic.td
+++ b/llvm/lib/Target/X86/X86InstrArithmetic.td
@@ -1278,8 +1278,10 @@
def TEST64mi32 : BinOpMI_F<"test", Xi64, X86testpat, MRM0m, 0xF6>;
// When testing the result of EXTRACT_SUBREG sub_8bit_hi, make sure the
- // register class is constrained to GR8_NOREX.
- let isPseudo = 1 in
+ // register class is constrained to GR8_NOREX. This pseudo is explicitly
+ // marked side-effect free, since it doesn't have an isel pattern like
+ // other test instructions.
+ let isPseudo = 1, hasSideEffects = 0 in
def TEST8ri_NOREX : I<0, Pseudo, (outs), (ins GR8_NOREX:$src, i8imm:$mask),
"", [], IIC_BIN_NONMEM>, Sched<[WriteALU]>;
} // Defs = [EFLAGS]