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TheRock/compiler/amd-llvm/llvm/test/Analysis/UniformityAnalysis/AMDGPU/nodivergencesource.ll
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derek.holloway 7502bf64a4
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32 lines
1000 B
LLVM

; RUN: opt -mtriple amdgcn-- -passes='print<uniformity>' -disable-output %s 2>&1 | FileCheck %s
; CHECK-LABEL: 'test'
; CHECK: DIVERGENT: %divergentval
; CHECK-NOT: DIVERGENT: %uniformval
; CHECK: %uniformval
define void @test() {
%divergentval = call i32 @normalfunc()
%uniformval = call i32 @nodivergencesourcefunc()
ret void
}
; Test a call with "nodivergencesource" attribute and divergent argument.
; The result of the call should propagate divergence from the operand.
; CHECK-LABEL: 'test_nodivergencesource_divergent_arg'
; CHECK: DIVERGENT: %tid
; CHECK: DIVERGENT: %call
define void @test_nodivergencesource_divergent_arg() {
%tid = call i32 @llvm.amdgcn.workitem.id.x()
%call = call i32 @nodivergencesourcefunc_arg(i32 %tid)
ret void
}
declare i32 @llvm.amdgcn.workitem.id.x()
declare i32 @normalfunc() #0
declare i32 @nodivergencesourcefunc() #1
declare i32 @nodivergencesourcefunc_arg(i32) #1
attributes #0 = { nounwind }
attributes #1 = { nounwind nodivergencesource }