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.
54 lines
1.4 KiB
LLVM
54 lines
1.4 KiB
LLVM
; RUN: llc < %s -mtriple=nvptx64 -mcpu=sm_35 -verify-machineinstrs | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -mtriple=nvptx64 -mcpu=sm_35 | %ptxas-verify %}
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; Verify that we correctly emit code for i8 ldg/ldu. We do not expose 8-bit
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; registers in the backend, so these loads need special handling.
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-unknown-unknown"
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; CHECK-LABEL: ex_zext
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define ptx_kernel void @ex_zext(ptr noalias readonly %data, ptr %res) {
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entry:
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; CHECK: ld.global.nc.u8
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%val = load i8, ptr %data
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; CHECK: cvt.u32.u8
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%valext = zext i8 %val to i32
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store i32 %valext, ptr %res
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ret void
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}
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; CHECK-LABEL: ex_sext
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define ptx_kernel void @ex_sext(ptr noalias readonly %data, ptr %res) {
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entry:
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; CHECK: ld.global.nc.u8
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%val = load i8, ptr %data
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; CHECK: cvt.s32.s8
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%valext = sext i8 %val to i32
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store i32 %valext, ptr %res
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ret void
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}
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; CHECK-LABEL: ex_zext_v2
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define ptx_kernel void @ex_zext_v2(ptr noalias readonly %data, ptr %res) {
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entry:
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; CHECK: ld.global.nc.v2.u8
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%val = load <2 x i8>, ptr %data
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; CHECK: cvt.u32.u16
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%valext = zext <2 x i8> %val to <2 x i32>
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store <2 x i32> %valext, ptr %res
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ret void
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}
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; CHECK-LABEL: ex_sext_v2
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define ptx_kernel void @ex_sext_v2(ptr noalias readonly %data, ptr %res) {
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entry:
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; CHECK: ld.global.nc.v2.u8
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%val = load <2 x i8>, ptr %data
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; CHECK: cvt.s32.s8
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%valext = sext <2 x i8> %val to <2 x i32>
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store <2 x i32> %valext, ptr %res
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ret void
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}
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