Imported Upstream version 5.18.0.207

Former-commit-id: 3b152f462918d427ce18620a2cbe4f8b79650449

external/llvm/test/Feature/OperandBundles/early-cse.ll

@@ -1,89 +0,0 @@
-; RUN: opt -S -early-cse < %s | FileCheck %s
-
-; While it is normally okay to do memory optimizations over calls to
-; @readonly_function and @readnone_function, we cannot do that if
-; they're carrying unknown operand bundles since the presence of
-; unknown operand bundles implies arbitrary memory effects.
-
-declare void @readonly_function() readonly nounwind
-declare void @readnone_function() readnone nounwind
-
-define i32 @test0(i32* %x) {
-; CHECK-LABEL: @test0(
- entry:
-  store i32 100, i32* %x
-; CHECK: store i32 100, i32* %x
-  call void @readonly_function() [ "tag"() ]
-; CHECK: call void @readonly_function()
-
-  %v = load i32, i32* %x
-; CHECK: %v = load i32, i32* %x
-; CHECK: ret i32 %v
-  ret i32 %v
-}
-
-define i32 @test1(i32* %x) {
-; CHECK: @test1(
- entry:
-  store i32 100, i32* %x
-; CHECK: store i32 100, i32* %x
-  call void @readonly_function() readonly [ "tag"() ]
-; CHECK-NOT: call void @readonly_function
-  %v = load i32, i32* %x
-  ret i32 %v
-; CHECK: ret i32 100
-}
-
-define i32 @test3(i32* %x) {
-; CHECK-LABEL: @test3(
- entry:
-  store i32 100, i32* %x
-; CHECK: store i32 100, i32* %x
-  call void @readonly_function()
-; CHECK-NOT: call void @readonly_function
-  %v = load i32, i32* %x
-  ret i32 %v
-; CHECK: ret i32 100
-}
-
-define void @test4(i32* %x) {
-; CHECK-LABEL: @test4(
- entry:
-  store i32 100, i32* %x
-; CHECK: store i32 100, i32* %x
-  call void @readnone_function() [ "tag"() ]
-; CHECK: call void @readnone_function
-  store i32 200, i32* %x
-; CHECK: store i32 200, i32* %x
-  ret void
-}
-
-define void @test5(i32* %x) {
-; CHECK-LABEL: @test5(
- entry:
-  store i32 100, i32* %x
-; CHECK-NOT: store i32 100, i32* %x
-; CHECK-NOT: call void @readnone_function
-  call void @readnone_function() readnone [ "tag"() ]
-  store i32 200, i32* %x
-; CHECK: store i32 200, i32* %x
-  ret void
-}
-
-define void @test6(i32* %x) {
-; The "deopt" operand bundle does not make the call to
-; @readonly_function read-write; and so the nounwind readonly call can
-; be deleted.
-
-; CHECK-LABEL: @test6(
- entry:
-
-; CHECK-NEXT: entry:
-; CHECK-NEXT:  store i32 200, i32* %x
-; CHECK-NEXT:  ret void
-
-  store i32 100, i32* %x
-  call void @readonly_function() [ "deopt"() ]
-  store i32 200, i32* %x
-  ret void
-}