derek.holloway
7502bf64a4
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172 lines
5.5 KiB
LLVM
172 lines
5.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --check-globals
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; RUN: opt -passes=ipsccp -S %s | FileCheck %s
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; Test cases to ensure argmemonly/inaccessiblemem_or_argmemonly attributes are
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; dropped, if a function argument is replaced by a constant.
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;
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; PR46717
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@g = internal global i32 0
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; Here the pointer argument %arg will be replaced by a constant. We need to
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; drop argmemonly.
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;.
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; CHECK: @[[G:[a-zA-Z0-9_$"\\.-]+]] = internal global i32 0
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;.
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define internal void @ptrarg.1(ptr %arg, i32 %val) argmemonly nounwind {
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; CHECK: Function Attrs: nounwind memory(readwrite, inaccessiblemem: none, target_mem: none)
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; CHECK-LABEL: @ptrarg.1(
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; CHECK-NEXT: store i32 10, ptr @g, align 4
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; CHECK-NEXT: ret void
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;
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store i32 %val, ptr %arg
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ret void
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}
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define i32 @caller.1(i32 %n) {
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; CHECK-LABEL: @caller.1(
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; CHECK-NEXT: store i32 1, ptr @g, align 4
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; CHECK-NEXT: tail call void @ptrarg.1(ptr @g, i32 10)
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; CHECK-NEXT: [[G_VAL:%.*]] = load i32, ptr @g, align 4
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; CHECK-NEXT: ret i32 [[G_VAL]]
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;
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store i32 1, ptr @g
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tail call void @ptrarg.1(ptr @g, i32 10)
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%g.val = load i32, ptr @g
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ret i32 %g.val
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}
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; Here only the non-pointer argument %val is replaced, no need
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; to drop the argmemonly attribute.
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define internal void @ptrarg.2(ptr %arg, i32 %val) argmemonly nounwind {
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; CHECK: Function Attrs: nounwind memory(argmem: readwrite)
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; CHECK-LABEL: @ptrarg.2(
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; CHECK-NEXT: store i32 10, ptr [[ARG:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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store i32 %val, ptr %arg
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ret void
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}
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define void @caller.2(ptr %ptr) {
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; CHECK-LABEL: @caller.2(
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; CHECK-NEXT: tail call void @ptrarg.2(ptr [[PTR:%.*]], i32 10)
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; CHECK-NEXT: ret void
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;
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tail call void @ptrarg.2(ptr %ptr, i32 10)
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ret void
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}
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; Here the pointer argument %arg will be replaced by a constant. We need to
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; drop inaccessiblemem_or_argmemonly.
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define internal void @ptrarg.3(ptr %arg, i32 %val) inaccessiblemem_or_argmemonly nounwind {
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; CHECK: Function Attrs: nounwind memory(readwrite, target_mem: none)
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; CHECK-LABEL: @ptrarg.3(
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; CHECK-NEXT: store i32 10, ptr @g, align 4
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; CHECK-NEXT: ret void
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;
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store i32 %val, ptr %arg
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ret void
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}
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define i32 @caller.3(i32 %n) {
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; CHECK-LABEL: @caller.3(
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; CHECK-NEXT: store i32 1, ptr @g, align 4
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; CHECK-NEXT: tail call void @ptrarg.3(ptr @g, i32 10)
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; CHECK-NEXT: [[G_VAL:%.*]] = load i32, ptr @g, align 4
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; CHECK-NEXT: ret i32 [[G_VAL]]
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;
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store i32 1, ptr @g
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tail call void @ptrarg.3(ptr @g, i32 10)
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%g.val = load i32, ptr @g
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ret i32 %g.val
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}
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; Here only the non-pointer argument %val is replaced, no need
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; to drop the inaccessiblemem_or_argmemonly attribute.
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define internal void @ptrarg.4(ptr %arg, i32 %val) inaccessiblemem_or_argmemonly nounwind {
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; CHECK: Function Attrs: nounwind memory(argmem: readwrite, inaccessiblemem: readwrite)
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; CHECK-LABEL: @ptrarg.4(
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; CHECK-NEXT: store i32 10, ptr [[ARG:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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store i32 %val, ptr %arg
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ret void
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}
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define void @caller.4(ptr %ptr) {
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; CHECK-LABEL: @caller.4(
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; CHECK-NEXT: tail call void @ptrarg.4(ptr [[PTR:%.*]], i32 10)
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; CHECK-NEXT: ret void
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;
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tail call void @ptrarg.4(ptr %ptr, i32 10)
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ret void
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}
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; Here the pointer argument %arg will be replaced by a constant. We need to
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; drop inaccessiblemem_or_argmemonly.
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define internal void @ptrarg.5(ptr %arg, i32 %val) argmemonly inaccessiblemem_or_argmemonly nounwind {
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; CHECK: Function Attrs: nounwind memory(readwrite, inaccessiblemem: none, target_mem: none)
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; CHECK-LABEL: @ptrarg.5(
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; CHECK-NEXT: store i32 10, ptr @g, align 4
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; CHECK-NEXT: ret void
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;
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store i32 %val, ptr %arg
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ret void
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}
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define i32 @caller.5(i32 %n) {
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; CHECK-LABEL: @caller.5(
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; CHECK-NEXT: store i32 1, ptr @g, align 4
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; CHECK-NEXT: tail call void @ptrarg.5(ptr @g, i32 10)
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; CHECK-NEXT: [[G_VAL:%.*]] = load i32, ptr @g, align 4
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; CHECK-NEXT: ret i32 [[G_VAL]]
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;
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store i32 1, ptr @g
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tail call void @ptrarg.5(ptr @g, i32 10)
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%g.val = load i32, ptr @g
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ret i32 %g.val
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}
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; Make sure callsite attributes are also dropped when a pointer argument is
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; replaced.
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define internal void @ptrarg.6.cs.attributes(ptr %arg, i32 %val) {
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; CHECK-LABEL: @ptrarg.6.cs.attributes(
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; CHECK-NEXT: unreachable
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;
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store i32 %val, ptr %arg
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ret void
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}
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define i32 @caller.6.cs.attributes(i32 %n) {
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; CHECK-LABEL: @caller.6.cs.attributes(
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; CHECK-NEXT: store i32 1, ptr @g, align 4
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; CHECK-NEXT: tail call void @ptrarg.5(ptr @g, i32 10) #[[ATTR0:[0-9]+]]
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; CHECK-NEXT: tail call void @ptrarg.5(ptr @g, i32 10) #[[ATTR2:[0-9]+]]
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; CHECK-NEXT: tail call void @ptrarg.5(ptr @g, i32 10) #[[ATTR0]]
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; CHECK-NEXT: tail call void @ptrarg.5(ptr @g, i32 10) #[[ATTR4:[0-9]+]]
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; CHECK-NEXT: [[G_VAL:%.*]] = load i32, ptr @g, align 4
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; CHECK-NEXT: ret i32 [[G_VAL]]
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;
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store i32 1, ptr @g
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tail call void @ptrarg.5(ptr @g, i32 10) argmemonly inaccessiblemem_or_argmemonly nounwind
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tail call void @ptrarg.5(ptr @g, i32 10) inaccessiblemem_or_argmemonly nounwind
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tail call void @ptrarg.5(ptr @g, i32 10) argmemonly nounwind
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tail call void @ptrarg.5(ptr @g, i32 10) nounwind
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%g.val = load i32, ptr @g
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ret i32 %g.val
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}
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;.
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; CHECK: attributes #[[ATTR0]] = { nounwind memory(readwrite, inaccessiblemem: none, target_mem: none) }
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; CHECK: attributes #[[ATTR1:[0-9]+]] = { nounwind memory(argmem: readwrite) }
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; CHECK: attributes #[[ATTR2]] = { nounwind memory(readwrite, target_mem: none) }
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; CHECK: attributes #[[ATTR3:[0-9]+]] = { nounwind memory(argmem: readwrite, inaccessiblemem: readwrite) }
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; CHECK: attributes #[[ATTR4]] = { nounwind }
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;.
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