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| author | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-05-23 19:33:16 +0000 |
|---|---|---|
| committer | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-05-23 19:33:16 +0000 |
| commit | 50acddba236ca32bc57d4dd26d8c112b0d8119c0 (patch) | |
| tree | ceb80b12933c527256b38624808c9fa69c568416 /test/TableGen | |
| parent | 87fb2325ec3baa99c32da4b88294c38564cea017 (diff) | |
| download | llvm-50acddba236ca32bc57d4dd26d8c112b0d8119c0.tar.gz | |
[globalisel][tablegen] Add support for (set $dst, 1) and test X86's OptForSize predicate.
Summary:
It's rare but a small number of patterns use IntInit's at the root of the match.
On X86, one such rule is enabled by the OptForSize predicate and causes the
compiler to use the smaller:
%0 = MOV32r1
instead of the usual:
%0 = MOV32ri 1
This patch adds support for matching IntInit's at the root and uses this as a
test case for the optsize attribute that was implemented in r301750
Reviewers: qcolombet, ab, t.p.northover, rovka, kristof.beyls, aditya_nandakumar
Reviewed By: qcolombet
Subscribers: igorb, llvm-commits
Differential Revision: https://reviews.llvm.org/D32791
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303678 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/TableGen')
| -rw-r--r-- | test/TableGen/GlobalISelEmitter.td | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/TableGen/GlobalISelEmitter.td b/test/TableGen/GlobalISelEmitter.td index aeac85962f6..8778ad71ea7 100644 --- a/test/TableGen/GlobalISelEmitter.td +++ b/test/TableGen/GlobalISelEmitter.td @@ -462,6 +462,32 @@ def XORManyDefaults : I<(outs GPR32:$dst), (ins m1Z:$src3, Z:$src2, GPR32:$src1) def ORN : I<(outs GPR32:$dst), (ins GPR32:$src1, GPR32:$src2), []>; def : Pat<(not GPR32:$Wm), (ORN R0, GPR32:$Wm)>; +//===- Test a simple pattern with just a leaf immediate. ------------------===// + +// CHECK-LABEL: if ([&]() { +// CHECK-NEXT: MachineInstr &MI0 = I; +// CHECK-NEXT: if (MI0.getNumOperands() < 2) +// CHECK-NEXT: return false; +// CHECK-NEXT: if ((MI0.getOpcode() == TargetOpcode::G_CONSTANT) && +// CHECK-NEXT: ((/* dst */ (MRI.getType(MI0.getOperand(0).getReg()) == (LLT::scalar(32))) && +// CHECK-NEXT: ((&RBI.getRegBankFromRegClass(MyTarget::GPR32RegClass) == RBI.getRegBank(MI0.getOperand(0).getReg(), MRI, TRI))))) && +// CHECK-NEXT: ((/* Operand 1 */ (MI0.getOperand(1).isCImm() && MI0.getOperand(1).getCImm()->equalsInt(1))))) { +// CHECK-NEXT: // 1:i32 => (MOV1:i32) +// CHECK-NEXT: MachineInstrBuilder MIB = BuildMI(*I.getParent(), I, I.getDebugLoc(), TII.get(MyTarget::MOV1)); +// CHECK-NEXT: MIB.add(MI0.getOperand(0)/*dst*/); +// CHECK-NEXT: for (const auto *FromMI : {&MI0, }) +// CHECK-NEXT: for (const auto &MMO : FromMI->memoperands()) +// CHECK-NEXT: MIB.addMemOperand(MMO); +// CHECK-NEXT: I.eraseFromParent(); +// CHECK-NEXT: MachineInstr &NewI = *MIB; +// CHECK-NEXT: constrainSelectedInstRegOperands(NewI, TII, TRI, RBI); +// CHECK-NEXT: return true; +// CHECK-NEXT: } +// CHECK-NEXT: return false; +// CHECK-NEXT: }()) { return true; } + +def MOV1 : I<(outs GPR32:$dst), (ins), [(set GPR32:$dst, 1)]>; + //===- Test a pattern with an MBB operand. --------------------------------===// // CHECK-LABEL: if ([&]() { |