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This patch lets the llvm tools handle the new HVX target features that
are added by frontend (clang). The target-features are of the form
"hvx-length64b" for 64 Byte HVX mode, "hvx-length128b" for 128 Byte mode HVX.
"hvx-double" is an alias to "hvx-length128b" and is soon will be deprecated.
The hvx version target feature is upgated form "+hvx" to "+hvxv{version_number}.
Eg: "+hvxv62"
For the correct HVX code generation, the user must use the following
target features.
For 64B mode: "+hvxv62" "+hvx-length64b"
For 128B mode: "+hvxv62" "+hvx-length128b"
Clang picks a default length if none is specified. If for some reason,
no hvx-length is specified to llvm, the compilation will bail out.
There is a corresponding clang patch.
Differential Revision: https://reviews.llvm.org/D38851
llvm-svn: 316101
29 lines
1.0 KiB
LLVM
29 lines
1.0 KiB
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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target triple = "hexagon"
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; Function Attrs: norecurse nounwind
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define void @test(<32 x i32>* nocapture readonly %x, <32 x i32>* nocapture readnone %y, <32 x i32>* nocapture %a, <32 x i32>* nocapture %b) #0 {
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entry:
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; CHECK: v0 = vmem(r0+#7):nt
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%add.ptr = getelementptr inbounds <32 x i32>, <32 x i32>* %x, i32 7
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%0 = load <32 x i32>, <32 x i32>* %add.ptr, align 128, !tbaa !1, !nontemporal !4
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; CHECK: v1.cur = vmem(r2+#0):nt
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%1 = load <32 x i32>, <32 x i32>* %a, align 128, !tbaa !1, !nontemporal !4
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; CHECK: vmem(r3+#3):nt = v1
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%add.ptr2 = getelementptr inbounds <32 x i32>, <32 x i32>* %b, i32 3
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store <32 x i32> %1, <32 x i32>* %add.ptr2, align 128, !tbaa !1, !nontemporal !4
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; CHECK: vmem(r2+#0):nt = v0
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store <32 x i32> %0, <32 x i32>* %a, align 128, !tbaa !1, !nontemporal !4
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ret void
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}
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attributes #0 = { norecurse nounwind "target-cpu"="hexagonv60" "target-features"="+hvxv60,+hvx-length128b" }
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!1 = !{!2, !2, i64 0}
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!2 = !{!"omnipotent char", !3, i64 0}
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!3 = !{!"Simple C/C++ TBAA"}
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!4 = !{i32 1}
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