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
21 lines
496 B
LLVM
21 lines
496 B
LLVM
; RUN: llc < %s -march=nvptx64 | FileCheck %s
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; RUN: %if ptxas %{ llc < %s -march=nvptx64 | %ptxas-verify %}
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declare i32 @get_register()
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define i1 @test1() {
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entry:
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%call = call i32 @llvm.nvvm.read.ptx.sreg.tid.x(), !range !0
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%cmp = icmp eq i32 %call, 1
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ret i1 %cmp
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}
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; CHECK-LABEL: test1(
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; CHECK: setp.eq.s32 %p1, %r1, 1;
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; CHECK: selp.u32 %[[R:.+]], 1, 0, %p1;
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; CHECK: st.param.b32 [func_retval0+0], %[[R]];
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declare i32 @llvm.nvvm.read.ptx.sreg.tid.x()
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!0 = !{ i32 0, i32 3 }
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