diff --git a/llvm/test/Transforms/Inline/no-inline-incompatible-gc.ll b/llvm/test/Transforms/Inline/no-inline-incompatible-gc.ll new file mode 100644 index 0000000000000..531801df7cc46 --- /dev/null +++ b/llvm/test/Transforms/Inline/no-inline-incompatible-gc.ll @@ -0,0 +1,140 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 +; RUN: opt -S -passes='cgscc(inline)' -pass-remarks=inline -pass-remarks-missed=inline < %s 2> %t.err | FileCheck %s +; RUN: FileCheck -implicit-check-not=remark -check-prefix=REMARK %s < %t.err + +; REMARK: remark: :0:0: 'callee_with_gc' inlined into 'caller_no_gc' +; REMARK-NEXT: remark: :0:0: 'callee_with_gc' inlined into 'caller_same_gc' +; REMARK-NEXT: remark: :0:0: 'callee_with_gc' is not inlined into 'caller_incompatible_gc': incompatible GC +; REMARK-NEXT: remark: :0:0: 'callee_with_gc' inlined into 'caller_inline_first_caller' +; REMARK-NEXT: remark: :0:0: 'callee_with_other_gc' is not inlined into 'caller_inline_first_caller': incompatible GC +; REMARK-NEXT: remark: :0:0: 'callee_with_gc' inlined into 'caller_inline_second_caller' +; REMARK-NEXT: remark: :0:0: 'callee_with_other_gc' is not inlined into 'caller_inline_second_caller': incompatible GC + +%IntArray = type { i32, [0 x ptr] } + +; Callee gc propagates to the caller +define i32 @caller_no_gc() { +; CHECK-LABEL: define i32 @caller_no_gc() gc "example" { +; CHECK-NEXT: [[ROOT_I:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT_I]], ptr null) +; CHECK-NEXT: [[OBJ_I:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ_I]], ptr [[ROOT_I]], align 8 +; CHECK-NEXT: [[LENGTH_I:%.*]] = load i32, ptr [[OBJ_I]], align 4 +; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: ret i32 [[LENGTH_I]] +; + %x = call i32 @callee_with_gc() + ret i32 %x +} + +; Inline of matching gc allowed. +define i32 @caller_same_gc() gc "example" { +; CHECK-LABEL: define i32 @caller_same_gc() gc "example" { +; CHECK-NEXT: [[ROOT_I:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT_I]], ptr null) +; CHECK-NEXT: [[OBJ_I:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ_I]], ptr [[ROOT_I]], align 8 +; CHECK-NEXT: [[LENGTH_I:%.*]] = load i32, ptr [[OBJ_I]], align 4 +; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: ret i32 [[LENGTH_I]] +; + %x = call i32 @callee_with_gc() + ret i32 %x +} + +; Reject inline with mismatched gc +define i32 @caller_incompatible_gc() gc "incompatible" { +; CHECK-LABEL: define i32 @caller_incompatible_gc() gc "incompatible" { +; CHECK-NEXT: [[X:%.*]] = call i32 @callee_with_gc() +; CHECK-NEXT: ret i32 [[X]] +; + %x = call i32 @callee_with_gc() + ret i32 %x +} + +define i32 @callee_with_gc() gc "example" { +; CHECK-LABEL: define i32 @callee_with_gc() gc "example" { +; CHECK-NEXT: [[ROOT:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT]], ptr null) +; CHECK-NEXT: [[OBJ:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ]], ptr [[ROOT]], align 8 +; CHECK-NEXT: [[LENGTH_PTR:%.*]] = getelementptr [[INTARRAY:%.*]], ptr [[OBJ]], i32 0, i32 0 +; CHECK-NEXT: [[LENGTH:%.*]] = load i32, ptr [[LENGTH_PTR]], align 4 +; CHECK-NEXT: ret i32 [[LENGTH]] +; + %root = alloca ptr, align 8 + call void @llvm.gcroot(ptr %root, ptr null) + %obj = call ptr @h() + store ptr %obj, ptr %root, align 8 + %Length.ptr = getelementptr %IntArray, ptr %obj, i32 0, i32 0 + %Length = load i32, ptr %Length.ptr, align 4 + ret i32 %Length +} + +define i32 @callee_with_other_gc() gc "other-example" { +; CHECK-LABEL: define i32 @callee_with_other_gc() gc "other-example" { +; CHECK-NEXT: [[ROOT:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT]], ptr null) +; CHECK-NEXT: [[OBJ:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ]], ptr [[ROOT]], align 8 +; CHECK-NEXT: [[LENGTH_PTR:%.*]] = getelementptr [[INTARRAY:%.*]], ptr [[OBJ]], i32 0, i32 0 +; CHECK-NEXT: [[LENGTH:%.*]] = load i32, ptr [[LENGTH_PTR]], align 4 +; CHECK-NEXT: ret i32 [[LENGTH]] +; + %root = alloca ptr, align 8 + call void @llvm.gcroot(ptr %root, ptr null) + %obj = call ptr @h() + store ptr %obj, ptr %root, align 8 + %Length.ptr = getelementptr %IntArray, ptr %obj, i32 0, i32 0 + %Length = load i32, ptr %Length.ptr, align 4 + ret i32 %Length +} + +; After inlining the first call, inline is blocked of the second call +; since the gc type propagates to the caller. +define i32 @caller_inline_first_caller() { +; CHECK-LABEL: define i32 @caller_inline_first_caller() gc "example" { +; CHECK-NEXT: [[ROOT_I:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT_I]], ptr null) +; CHECK-NEXT: [[OBJ_I:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ_I]], ptr [[ROOT_I]], align 8 +; CHECK-NEXT: [[LENGTH_I:%.*]] = load i32, ptr [[OBJ_I]], align 4 +; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: [[Y:%.*]] = call i32 @callee_with_other_gc() +; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LENGTH_I]], [[Y]] +; CHECK-NEXT: ret i32 [[ADD]] +; + %x = call i32 @callee_with_gc() + %y = call i32 @callee_with_other_gc() + %add = add i32 %x, %y + ret i32 %add +} + +; We can't inline the first call due to the incompatible gc, but can +; inline the second +define i32 @caller_inline_second_caller() gc "example" { +; CHECK-LABEL: define i32 @caller_inline_second_caller() gc "example" { +; CHECK-NEXT: [[ROOT_I:%.*]] = alloca ptr, align 8 +; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: call void @llvm.gcroot(ptr [[ROOT_I]], ptr null) +; CHECK-NEXT: [[OBJ_I:%.*]] = call ptr @h() +; CHECK-NEXT: store ptr [[OBJ_I]], ptr [[ROOT_I]], align 8 +; CHECK-NEXT: [[LENGTH_I:%.*]] = load i32, ptr [[OBJ_I]], align 4 +; CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[ROOT_I]]) +; CHECK-NEXT: [[Y:%.*]] = call i32 @callee_with_other_gc() +; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LENGTH_I]], [[Y]] +; CHECK-NEXT: ret i32 [[ADD]] +; + %x = call i32 @callee_with_gc() + %y = call i32 @callee_with_other_gc() + %add = add i32 %x, %y + ret i32 %add +} + +declare ptr @h() + +declare void @llvm.gcroot(ptr, ptr) #0 +attributes #0 = { nounwind }