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262321d1ff
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
36 lines
1.2 KiB
LLVM
36 lines
1.2 KiB
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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; REQUIRES: asserts
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; This used to crash. Check for some sane output.
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; CHECK: call printf
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target triple = "hexagon"
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@g0 = external local_unnamed_addr global [4 x i64], align 8
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@g1 = external hidden unnamed_addr constant [29 x i8], align 1
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@g2 = external hidden unnamed_addr constant [29 x i8], align 1
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define void @fred() local_unnamed_addr #0 {
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b0:
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%v1 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @g0, i32 0, i32 0), align 8
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%v2 = trunc i64 %v1 to i32
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%v3 = lshr i64 %v1, 16
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%v4 = trunc i64 %v3 to i32
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%v5 = and i32 %v4, 255
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%v6 = add nuw nsw i32 0, %v5
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%v7 = add nuw nsw i32 %v6, 0
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%v8 = zext i32 %v7 to i64
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%v9 = and i32 %v2, 65535
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%v10 = and i32 %v4, 65535
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%v11 = add nuw nsw i32 %v10, %v9
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%v12 = zext i32 %v11 to i64
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tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @g1, i32 0, i32 0), i64 %v8) #0
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tail call void (i8*, ...) @printf(i8* getelementptr inbounds ([29 x i8], [29 x i8]* @g2, i32 0, i32 0), i64 %v12) #0
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ret void
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}
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; Function Attrs: nounwind
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declare void @printf(i8* nocapture readonly, ...) local_unnamed_addr #0
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attributes #0 = { nounwind "target-cpu"="hexagonv60" "target-features"="-hvx,-long-calls" }
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