51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
; RUN: opt -S -passes=inferattrs,function-attrs < %s | FileCheck %s
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declare void @f_readonly() readonly
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declare void @f_readnone() readnone
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declare void @f_writeonly() writeonly
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define void @test_0(i32* %x) {
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; FunctionAttrs must not infer readonly / readnone for %x
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; CHECK-LABEL: define void @test_0(i32* %x) #3 {
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entry:
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; CHECK: call void @f_readonly() [ "foo"(i32* %x) ]
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call void @f_readonly() [ "foo"(i32* %x) ]
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ret void
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}
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define void @test_1(i32* %x) {
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; FunctionAttrs must not infer readonly / readnone for %x
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; CHECK-LABEL: define void @test_1(i32* %x) #4 {
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entry:
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; CHECK: call void @f_readnone() [ "foo"(i32* %x) ]
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call void @f_readnone() [ "foo"(i32* %x) ]
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ret void
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}
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define void @test_2(i32* %x) {
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; FunctionAttrs must not infer writeonly
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; CHECK-LABEL: define void @test_2(i32* %x) {
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entry:
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; CHECK: call void @f_writeonly() [ "foo"(i32* %x) ]
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call void @f_writeonly() [ "foo"(i32* %x) ]
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ret void
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}
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define void @test_3(i32* %x) {
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; The "deopt" operand bundle does not capture or write to %x.
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; CHECK-LABEL: define void @test_3(i32* nocapture readonly %x)
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entry:
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call void @f_readonly() [ "deopt"(i32* %x) ]
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ret void
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}
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; CHECK: attributes #0 = { nofree memory(read) }
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; CHECK: attributes #1 = { nofree nosync memory(none) }
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; CHECK: attributes #2 = { memory(write) }
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; CHECK: attributes #3 = { nofree }
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; CHECK: attributes #4 = { nofree nosync }
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