4583f6d344
the `ptx_kernel` calling convention is a more idiomatic and standard way of specifying a NVPTX kernel than using the metadata which is not supposed to change the meaning of the program. Further, checking the calling convention is significantly faster than traversing the metadata, improving compile time. This change updates the clang and mlir frontends as well as the NVPTXCtorDtorLowering pass to emit kernels using the calling convention. In addition, this updates all NVPTX unit tests to use the calling convention as well.
26 lines
1.2 KiB
LLVM
26 lines
1.2 KiB
LLVM
; RUN: opt < %s -nvptx-lower-args -S | FileCheck %s
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; RUN: llc < %s -mtriple=nvptx64 -mcpu=sm_35 | FileCheck %s --check-prefix PTX
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; RUN: %if ptxas %{ llc < %s -mtriple=nvptx64 -mcpu=sm_35 | %ptxas-verify %}
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v16:16:16-v32:32:32-v64:64:64-v128:128:128-n16:32:64"
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target triple = "nvptx64-unknown-unknown"
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%struct.S = type { i32, i32 }
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; Function Attrs: nounwind
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define ptx_kernel void @_Z11TakesStruct1SPi(ptr byval(%struct.S) nocapture readonly %input, ptr nocapture %output) #0 {
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entry:
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; CHECK-LABEL: @_Z11TakesStruct1SPi
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; PTX-LABEL: .visible .entry _Z11TakesStruct1SPi(
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; CHECK: addrspacecast ptr %input to ptr addrspace(101)
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%b = getelementptr inbounds %struct.S, ptr %input, i64 0, i32 1
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%0 = load i32, ptr %b, align 4
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; PTX-NOT: ld.param.u32 {{%r[0-9]+}}, [{{%rd[0-9]+}}]
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; PTX: ld.param.u32 [[value:%r[0-9]+]], [_Z11TakesStruct1SPi_param_0+4]
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store i32 %0, ptr %output, align 4
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; PTX-NEXT: st.global.u32 [{{%rd[0-9]+}}], [[value]]
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ret void
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}
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attributes #0 = { nounwind "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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