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Hexagon: Expand addc, adde, subc and sube.

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llvm-svn: 176505
This commit is contained in:
Jyotsna Verma 2013-03-05 19:04:47 +00:00
parent 7d23f90858
commit baf7212bfe
3 changed files with 86 additions and 0 deletions
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23
lib/Target/Hexagon/HexagonISelLowering.cpp
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@ -1365,6 +1365,29 @@ HexagonTargetLowering::HexagonTargetLowering(HexagonTargetMachine
setOperationAction(ISD::FREM , MVT::f32, Expand);
setOperationAction(ISD::FSINCOS, MVT::f64, Expand);
setOperationAction(ISD::FSINCOS, MVT::f32, Expand);
// In V4, we have double word add/sub with carry. The problem with
// modelling this instruction is that it produces 2 results - Rdd and Px.
// To model update of Px, we will have to use Defs[p0..p3] which will
// cause any predicate live range to spill. So, we pretend we dont't
// have these instructions.
setOperationAction(ISD::ADDE, MVT::i8, Expand);
setOperationAction(ISD::ADDE, MVT::i16, Expand);
setOperationAction(ISD::ADDE, MVT::i32, Expand);
setOperationAction(ISD::ADDE, MVT::i64, Expand);
setOperationAction(ISD::SUBE, MVT::i8, Expand);
setOperationAction(ISD::SUBE, MVT::i16, Expand);
setOperationAction(ISD::SUBE, MVT::i32, Expand);
setOperationAction(ISD::SUBE, MVT::i64, Expand);
setOperationAction(ISD::ADDC, MVT::i8, Expand);
setOperationAction(ISD::ADDC, MVT::i16, Expand);
setOperationAction(ISD::ADDC, MVT::i32, Expand);
setOperationAction(ISD::ADDC, MVT::i64, Expand);
setOperationAction(ISD::SUBC, MVT::i8, Expand);
setOperationAction(ISD::SUBC, MVT::i16, Expand);
setOperationAction(ISD::SUBC, MVT::i32, Expand);
setOperationAction(ISD::SUBC, MVT::i64, Expand);
setOperationAction(ISD::CTPOP, MVT::i32, Expand);
setOperationAction(ISD::CTPOP, MVT::i64, Expand);
setOperationAction(ISD::CTTZ , MVT::i32, Expand);

34
test/CodeGen/Hexagon/adde.ll Normal file
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@ -0,0 +1,34 @@
; RUN: llc -march=hexagon < %s | FileCheck %s
; CHECK: r{{[0-9]+:[0-9]+}} = #0
; CHECK: r{{[0-9]+:[0-9]+}} = #1
; CHECK: r{{[0-9]+:[0-9]+}} = add(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: p{{[0-9]+}} = cmp.gtu(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: p{{[0-9]+}} = cmp.gtu(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = combine(r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = combine(r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = add(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
define void @check_adde_addc (i64 %AL, i64 %AH, i64 %BL, i64 %BH, i64* %RL, i64* %RH) {
entry:
%tmp1 = zext i64 %AL to i128
%tmp23 = zext i64 %AH to i128
%tmp4 = shl i128 %tmp23, 64
%tmp5 = or i128 %tmp4, %tmp1
%tmp67 = zext i64 %BL to i128
%tmp89 = zext i64 %BH to i128
%tmp11 = shl i128 %tmp89, 64
%tmp12 = or i128 %tmp11, %tmp67
%tmp15 = add i128 %tmp12, %tmp5
%tmp1617 = trunc i128 %tmp15 to i64
store i64 %tmp1617, i64* %RL
%tmp21 = lshr i128 %tmp15, 64
%tmp2122 = trunc i128 %tmp21 to i64
store i64 %tmp2122, i64* %RH
ret void
}

29
test/CodeGen/Hexagon/sube.ll Normal file
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@ -0,0 +1,29 @@
; RUN: llc -march=hexagon < %s | FileCheck %s
; CHECK: r{{[0-9]+:[0-9]+}} = #0
; CHECK: r{{[0-9]+:[0-9]+}} = #1
; CHECK: p{{[0-9]+}} = cmp.gtu(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+}} = mux(p{{[0-9]+}}, r{{[0-9]+}}, r{{[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = sub(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = sub(r{{[0-9]+:[0-9]+}}, r{{[0-9]+:[0-9]+}})
; CHECK: r{{[0-9]+:[0-9]+}} = combine(r{{[0-9]+}}, r{{[0-9]+}})
define void @check_sube_subc(i64 %AL, i64 %AH, i64 %BL, i64 %BH, i64* %RL, i64* %RH) {
entry:
%tmp1 = zext i64 %AL to i128
%tmp23 = zext i64 %AH to i128
%tmp4 = shl i128 %tmp23, 64
%tmp5 = or i128 %tmp4, %tmp1
%tmp67 = zext i64 %BL to i128
%tmp89 = zext i64 %BH to i128
%tmp11 = shl i128 %tmp89, 64
%tmp12 = or i128 %tmp11, %tmp67
%tmp15 = sub i128 %tmp5, %tmp12
%tmp1617 = trunc i128 %tmp15 to i64
store i64 %tmp1617, i64* %RL
%tmp21 = lshr i128 %tmp15, 64
%tmp2122 = trunc i128 %tmp21 to i64
store i64 %tmp2122, i64* %RH
ret void
}