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
27 lines
827 B
LLVM
27 lines
827 B
LLVM
; RUN: llc < %s -march=nvptx -mcpu=sm_20 -verify-machineinstrs | FileCheck %s
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; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 -verify-machineinstrs | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx -mcpu=sm_20 -verify-machineinstrs | %ptxas-verify %}
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; RUN: %if ptxas %{ llc < %s -march=nvptx64 -mcpu=sm_20 -verify-machineinstrs | %ptxas-verify %}
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; CHECK: .func ({{.*}}) device_func
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define float @device_func(float %a) noinline {
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%ret = fmul float %a, %a
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ret float %ret
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}
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; CHECK: .entry kernel_func
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define void @kernel_func(float* %a) {
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%val = load float, float* %a
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; CHECK: call.uni (retval0),
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; CHECK: device_func,
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%mul = call float @device_func(float %val)
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store float %mul, float* %a
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ret void
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}
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!nvvm.annotations = !{!1}
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!1 = !{void (float*)* @kernel_func, !"kernel", i32 1}
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