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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
38 lines
1.6 KiB
LLVM
38 lines
1.6 KiB
LLVM
; RUN: llc -march=hexagon < %s | FileCheck %s
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; CHECK: r0 = #24
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; CHECK-NEXT: r1 =
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; // R2 should be assigned a value from R3+.
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; CHECK-NEXT: r2 = r{{[3-9]}}
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; CHECK-NEXT: trap0
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target datalayout = "e-m:e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a:0-n16:32"
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target triple = "hexagon"
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; Function Attrs: nounwind
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define i32 @foo(i32 %status) #0 {
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entry:
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%arg1 = alloca i32, align 4
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%0 = bitcast i32* %arg1 to i8*
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call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) #2
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store i32 %status, i32* %arg1, align 4, !tbaa !1
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%1 = call i32 asm sideeffect "r0 = #$1\0Ar1 = $2\0Ar2 = $4\0Atrap0 (#0)\0A$0 = r0", "=r,i,r,*m,r,~{r0},~{r1},~{r2}"(i32 24, i32* nonnull %arg1, i32* nonnull %arg1, i32 %status) #2, !srcloc !5
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call void @llvm.lifetime.end.p0i8(i64 4, i8* %0) #2
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ret i32 %1
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}
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
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; Function Attrs: argmemonly nounwind
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
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attributes #0 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="hexagonv5" "target-features"="-hvx" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { argmemonly nounwind }
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attributes #2 = { nounwind }
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!1 = !{!2, !2, i64 0}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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!5 = !{i32 110, i32 129, i32 146, i32 163, i32 183}
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