diff options
Diffstat (limited to 'llvm/test/Transforms/FunctionSpecialization/reachable-after-specialization.ll')
| -rw-r--r-- | llvm/test/Transforms/FunctionSpecialization/reachable-after-specialization.ll | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/llvm/test/Transforms/FunctionSpecialization/reachable-after-specialization.ll b/llvm/test/Transforms/FunctionSpecialization/reachable-after-specialization.ll new file mode 100644 index 000000000000..ab2260aadab3 --- /dev/null +++ b/llvm/test/Transforms/FunctionSpecialization/reachable-after-specialization.ll @@ -0,0 +1,135 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 +; RUN: opt -passes=ipsccp --funcspec-min-function-size=1 -S < %s | FileCheck %s + +define i32 @caller() { +; CHECK-LABEL: define i32 @caller() { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: [[CALL1:%.*]] = call i32 @callee.specialized.1(i32 1) +; CHECK-NEXT: [[CALL2:%.*]] = call i32 @callee.specialized.2(i32 0) +; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 undef, 0 +; CHECK-NEXT: br i1 [[COND]], label %[[COMMON_RET:.*]], label %[[IF_THEN:.*]] +; CHECK: [[COMMON_RET]]: +; CHECK-NEXT: ret i32 0 +; CHECK: [[IF_THEN]]: +; CHECK-NEXT: ret i32 0 +; +entry: + %call1 = call i32 @callee(i32 1) + %call2 = call i32 @callee(i32 0) + %cond = icmp eq i32 %call2, 0 + br i1 %cond, label %common.ret, label %if.then + +common.ret: ; preds = %entry + ret i32 0 + +if.then: ; preds = %entry + %unreachable_call = call i32 @callee(i32 2) + ret i32 %unreachable_call +} + +define internal i32 @callee(i32 %arg) { +entry: + br label %loop + +loop: ; preds = %ai, %entry + %add = or i32 0, 0 + %cond = icmp eq i32 %arg, 1 + br i1 %cond, label %exit, label %loop + +exit: ; preds = %ai + ret i32 0 +} + +declare void @other_user(ptr) + +define i32 @caller2() { +; CHECK-LABEL: define i32 @caller2() { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: call void @other_user(ptr @callee2) +; CHECK-NEXT: [[CALL1:%.*]] = call i32 @callee2.specialized.3(i32 1) +; CHECK-NEXT: [[CALL2:%.*]] = call i32 @callee2.specialized.4(i32 0) +; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 undef, 0 +; CHECK-NEXT: br i1 [[COND]], label %[[COMMON_RET:.*]], label %[[IF_THEN:.*]] +; CHECK: [[COMMON_RET]]: +; CHECK-NEXT: ret i32 0 +; CHECK: [[IF_THEN]]: +; CHECK-NEXT: [[UNREACHABLE_CALL:%.*]] = call i32 @callee2.specialized.7(i32 2) +; CHECK-NEXT: ret i32 undef +; +entry: + call void @other_user(ptr @callee2) + %call1 = call i32 @callee2(i32 1) + %call2 = call i32 @callee2(i32 0) + %cond = icmp eq i32 %call2, 0 + br i1 %cond, label %common.ret, label %if.then + +common.ret: ; preds = %entry + ret i32 0 + +if.then: ; preds = %entry + %unreachable_call = call i32 @callee2(i32 2) + ret i32 %unreachable_call +} + +define internal i32 @callee2(i32 %arg) { +; CHECK-LABEL: define internal i32 @callee2( +; CHECK-SAME: i32 [[ARG:%.*]]) { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: br label %[[LOOP:.*]] +; CHECK: [[LOOP]]: +; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[ARG]], 1 +; CHECK-NEXT: br i1 [[COND]], label %[[EXIT:.*]], label %[[LOOP]] +; CHECK: [[EXIT]]: +; CHECK-NEXT: ret i32 0 +; +entry: + br label %loop + +loop: ; preds = %ai, %entry + %add = or i32 0, 0 + %cond = icmp eq i32 %arg, 1 + br i1 %cond, label %exit, label %loop + +exit: ; preds = %ai + ret i32 0 +} + +define i32 @caller3(i32 %arg) { +; CHECK-LABEL: define range(i32 2, 1) i32 @caller3( +; CHECK-SAME: i32 [[ARG:%.*]]) { +; CHECK-NEXT: [[ENTRY:.*:]] +; CHECK-NEXT: [[CALL1:%.*]] = call i32 @callee3.specialized.5(i32 0) +; CHECK-NEXT: [[CALL2:%.*]] = call i32 @callee3.specialized.6(i32 1) +; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 undef, 0 +; CHECK-NEXT: br i1 [[COND]], label %[[COMMON_RET:.*]], label %[[IF_THEN:.*]] +; CHECK: [[COMMON_RET]]: +; CHECK-NEXT: ret i32 0 +; CHECK: [[IF_THEN]]: +; CHECK-NEXT: ret i32 poison +; +entry: + %call1 = call i32 @callee3(i32 0) + %call2 = call i32 @callee3(i32 1) + %cond = icmp eq i32 %call2, 0 + br i1 %cond, label %common.ret, label %if.then + +common.ret: ; preds = %entry + ret i32 0 + +if.then: ; preds = %entry + %unreachable_call = call i32 @callee3(i32 %arg) + ret i32 %unreachable_call +} + +define internal i32 @callee3(i32 %arg) { +entry: + br label %loop + +loop: ; preds = %ai, %entry + %add = or i32 0, 0 + %cond = icmp ne i32 %arg, 1 + br i1 %cond, label %exit, label %loop + +exit: ; preds = %ai + ret i32 %arg +} |