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
55 lines
1.8 KiB
LLVM
55 lines
1.8 KiB
LLVM
; RUN: llc < %s | FileCheck -check-prefix=ENABLED %s
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; RUN: llc -disable-nvptx-load-store-vectorizer < %s | FileCheck -check-prefix=DISABLED %s
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; RUN: %if ptxas %{ llc < %s | %ptxas-verify %}
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; RUN: %if ptxas %{ llc -disable-nvptx-load-store-vectorizer < %s | %ptxas-verify %}
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target triple = "nvptx64-nvidia-cuda"
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; Check that the load-store vectorizer is enabled by default for nvptx, and
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; that it's disabled by the appropriate flag.
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; ENABLED: ld.v2.{{.}}32
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; DISABLED: ld.{{.}}32
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; DISABLED: ld.{{.}}32
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define i32 @f(i32* %p) {
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%p.1 = getelementptr i32, i32* %p, i32 1
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%v0 = load i32, i32* %p, align 8
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%v1 = load i32, i32* %p.1, align 4
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%sum = add i32 %v0, %v1
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ret i32 %sum
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}
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define half @fh(half* %p) {
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%p.1 = getelementptr half, half* %p, i32 1
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%p.2 = getelementptr half, half* %p, i32 2
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%p.3 = getelementptr half, half* %p, i32 3
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%p.4 = getelementptr half, half* %p, i32 4
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%v0 = load half, half* %p, align 64
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%v1 = load half, half* %p.1, align 4
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%v2 = load half, half* %p.2, align 4
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%v3 = load half, half* %p.3, align 4
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%v4 = load half, half* %p.4, align 4
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%sum1 = fadd half %v0, %v1
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%sum2 = fadd half %v2, %v3
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%sum3 = fadd half %sum1, %sum2
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%sum = fadd half %sum3, %v4
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ret half %sum
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}
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define float @ff(float* %p) {
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%p.1 = getelementptr float, float* %p, i32 1
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%p.2 = getelementptr float, float* %p, i32 2
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%p.3 = getelementptr float, float* %p, i32 3
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%p.4 = getelementptr float, float* %p, i32 4
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%v0 = load float, float* %p, align 64
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%v1 = load float, float* %p.1, align 4
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%v2 = load float, float* %p.2, align 4
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%v3 = load float, float* %p.3, align 4
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%v4 = load float, float* %p.4, align 4
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%sum1 = fadd float %v0, %v1
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%sum2 = fadd float %v2, %v3
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%sum3 = fadd float %sum1, %sum2
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%sum = fadd float %sum3, %v4
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ret float %sum
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}
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