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[AArch64]Fix the problem can't select f16_to_f32 and f32_to_f16.

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Also add copy support for FPR16.
Also add a missing test case file belongs to commit r197361.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199463 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hao Liu 2014-01-17 06:23:30 +00:00
parent 16511208f2
commit 84887ceca3
3 changed files with 45 additions and 0 deletions
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10
lib/Target/AArch64/AArch64InstrInfo.cpp
View File

@ -132,6 +132,16 @@ void AArch64InstrInfo::copyPhysReg(MachineBasicBlock &MBB,
.addImm(16);
return;
}
} else if (AArch64::FPR16RegClass.contains(DestReg, SrcReg)) {
// The copy of two FPR16 registers is implemented by the copy of two FPR32
const TargetRegisterInfo *TRI = &getRegisterInfo();
unsigned Dst = TRI->getMatchingSuperReg(SrcReg, AArch64::sub_16,
&AArch64::FPR32RegClass);
unsigned Src = TRI->getMatchingSuperReg(DestReg, AArch64::sub_16,
&AArch64::FPR32RegClass);
BuildMI(MBB, I, DL, get(AArch64::FMOVss), Dst)
.addReg(Src);
return;
} else {
CopyPhysRegTuple(MBB, I, DL, DestReg, SrcReg);
return;

6
lib/Target/AArch64/AArch64InstrNEON.td
View File

@ -8852,6 +8852,12 @@ def : Pat<(v2i64 (sra (v2i64 VPR128:$Rn), (v2i64 VPR128:$Rm))),
// Patterns for handling half-precision values
//
// Convert between f16 value and f32 value
def : Pat<(f32 (f16_to_f32 (i32 GPR32:$Rn))),
(FCVTsh (EXTRACT_SUBREG (FMOVsw $Rn), sub_16))>;
def : Pat<(i32 (f32_to_f16 (f32 FPR32:$Rn))),
(FMOVws (SUBREG_TO_REG (i64 0), (f16 (FCVThs $Rn)), sub_16))>;
// Convert f16 value coming in as i16 value to f32
def : Pat<(f32 (f16_to_f32 (i32 (and (i32 GPR32:$Rn), 65535)))),
(FCVTsh (EXTRACT_SUBREG (FMOVsw GPR32:$Rn), sub_16))>;

29
test/CodeGen/AArch64/neon-load-store-v1i32.ll Normal file
View File

@ -0,0 +1,29 @@
; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mattr=+neon | FileCheck %s
; Test load/store of v1i8, v1i16, v1i32 types can be selected correctly
define void @load.store.v1i8(<1 x i8>* %ptr, <1 x i8>* %ptr2) {
; CHECK-LABEL: load.store.v1i8:
; CHECK: ldr b{{[0-9]+}}, [x{{[0-9]+|sp}}]
; CHECK: str b{{[0-9]+}}, [x{{[0-9]+|sp}}]
%a = load <1 x i8>* %ptr
store <1 x i8> %a, <1 x i8>* %ptr2
ret void
}
define void @load.store.v1i16(<1 x i16>* %ptr, <1 x i16>* %ptr2) {
; CHECK-LABEL: load.store.v1i16:
; CHECK: ldr h{{[0-9]+}}, [x{{[0-9]+|sp}}]
; CHECK: str h{{[0-9]+}}, [x{{[0-9]+|sp}}]
%a = load <1 x i16>* %ptr
store <1 x i16> %a, <1 x i16>* %ptr2
ret void
}
define void @load.store.v1i32(<1 x i32>* %ptr, <1 x i32>* %ptr2) {
; CHECK-LABEL: load.store.v1i32:
; CHECK: ldr s{{[0-9]+}}, [x{{[0-9]+|sp}}]
; CHECK: str s{{[0-9]+}}, [x{{[0-9]+|sp}}]
%a = load <1 x i32>* %ptr
store <1 x i32> %a, <1 x i32>* %ptr2
ret void
}