0f1b5f115a
ptxas is a proprietary compiler from Nvidia that can compile PTX to machine code (SASS). It has a lot of diagnostics to catch errors in PTX, which can be used to verify PTX output from llc. Set -DPXTAS_EXECUTABLE=/path/to/ptxas CMake option to enable it. If this option is not set, then ptxas is substituted to true which effectively disables all ptxas RUN lines. LLVM_PTXAS_EXECUTABLE environment variable takes precedence over the CMake option, and allows to override ptxas executable that is used for LIT without complete re-configuration. Differential Revision: https://reviews.llvm.org/D121727
24 lines
851 B
LLVM
24 lines
851 B
LLVM
; RUN: opt < %s -S -nvptx-lower-alloca -infer-address-spaces | FileCheck %s
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; RUN: llc < %s -march=nvptx64 -mcpu=sm_35 | FileCheck %s --check-prefix PTX
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; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_35 | %ptxas-verify -arch=sm_35 %}
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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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define void @kernel() {
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; LABEL: @lower_alloca
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; PTX-LABEL: .visible .entry kernel(
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%A = alloca i32
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; CHECK: addrspacecast i32* %A to i32 addrspace(5)*
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; CHECK: store i32 0, i32 addrspace(5)* {{%.+}}
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; PTX: st.local.u32 [{{%rd[0-9]+}}], {{%r[0-9]+}}
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store i32 0, i32* %A
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call void @callee(i32* %A)
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ret void
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}
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declare void @callee(i32*)
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!nvvm.annotations = !{!0}
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!0 = !{void ()* @kernel, !"kernel", i32 1}
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