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; RUN: opt -S -passes=inferattrs,function-attrs < %s | FileCheck %s
declare void @f_readonly() readonly
declare void @f_readnone() readnone
declare void @f_writeonly() writeonly
define void @test_0(ptr %x) {
; FunctionAttrs must not infer readonly / readnone for %x
; CHECK-LABEL: define void @test_0(ptr %x) #3 {
entry:
; CHECK: call void @f_readonly() [ "foo"(ptr %x) ]
call void @f_readonly() [ "foo"(ptr %x) ]
ret void
}
define void @test_1(ptr %x) {
; FunctionAttrs must not infer readonly / readnone for %x
; CHECK-LABEL: define void @test_1(ptr %x) #4 {
entry:
; CHECK: call void @f_readnone() [ "foo"(ptr %x) ]
call void @f_readnone() [ "foo"(ptr %x) ]
ret void
}
define void @test_2(ptr %x) {
; FunctionAttrs must not infer writeonly
; CHECK-LABEL: define void @test_2(ptr %x) {
entry:
; CHECK: call void @f_writeonly() [ "foo"(ptr %x) ]
call void @f_writeonly() [ "foo"(ptr %x) ]
ret void
}
define void @test_3(ptr %x) {
; The "deopt" operand bundle does not capture or write to %x.
; CHECK-LABEL: define void @test_3(ptr nocapture readonly %x)
entry:
call void @f_readonly() [ "deopt"(ptr %x) ]
ret void
}
; CHECK: attributes #0 = { nofree memory(read) }
; CHECK: attributes #1 = { nofree nosync memory(none) }
; CHECK: attributes #2 = { memory(write) }
; CHECK: attributes #3 = { nofree }
; CHECK: attributes #4 = { nofree nosync }
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