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
32 lines
1.3 KiB
LLVM
32 lines
1.3 KiB
LLVM
; RUN: llc < %s | FileCheck %s
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; RUN: %if ptxas %{ llc < %s | %ptxas-verify %}
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target triple = "nvptx64-nvidia-cuda"
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; CHECK-LABEL: test1
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; CHECK: ld.global.v2.f32
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; CHECK: ld.global.v2.f32
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; CHECK: st.global.v2.f32
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; CHECK: st.global.v2.f32
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define void @test1(float addrspace(1)* noalias align 8 %in, float addrspace(1)* noalias align 8 %out) {
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%in.1 = getelementptr float, float addrspace(1)* %in, i32 1
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%in.2 = getelementptr float, float addrspace(1)* %in, i32 2
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%in.3 = getelementptr float, float addrspace(1)* %in, i32 3
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%v0 = load float, float addrspace(1)* %in, align 8
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%v1 = load float, float addrspace(1)* %in.1, align 4
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%v2 = load float, float addrspace(1)* %in.2, align 8
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%v3 = load float, float addrspace(1)* %in.3, align 4
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%sum0 = fadd float %v0, %v1
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%sum1 = fadd float %v1, %v2
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%sum2 = fadd float %v3, %v1
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%sum3 = fadd float %v2, %v3
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%out.1 = getelementptr float, float addrspace(1)* %out, i32 1
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%out.2 = getelementptr float, float addrspace(1)* %out, i32 2
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%out.3 = getelementptr float, float addrspace(1)* %out, i32 3
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store float %sum0, float addrspace(1)* %out, align 8
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store float %sum1, float addrspace(1)* %out.1, align 4
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store float %sum2, float addrspace(1)* %out.2, align 8
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store float %sum3, float addrspace(1)* %out.3, align 4
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ret void
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}
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