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
25 lines
495 B
LLVM
25 lines
495 B
LLVM
; RUN: llc < %s -march=nvptx 2>&1 | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx | %ptxas-verify %}
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; Make sure the example doesn't crash with segfault
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; CHECK: .visible .func ({{.*}}) loop
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define i32 @loop(i32, i32) {
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entry:
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br label %loop
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loop:
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%i = phi i32 [ %0, %entry ], [ %res, %loop ]
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%res = call i32 @div(i32 %i, i32 %1)
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%exitcond = icmp eq i32 %res, %0
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br i1 %exitcond, label %exit, label %loop
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exit:
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ret i32 %res
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}
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define i32 @div(i32, i32) {
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ret i32 0
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}
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