forked from OSchip/llvm-project
39 lines
1.1 KiB
LLVM
39 lines
1.1 KiB
LLVM
;; RUN: opt < %s -rewrite-statepoints-for-gc -S | FileCheck %s
|
|
|
|
;; This test is to verify that gc_result from a call statepoint
|
|
;; can have preceding phis in its parent basic block. Unlike
|
|
;; invoke statepoint, call statepoint does not terminate the
|
|
;; block, and thus its gc_result is in the same block with the
|
|
;; call statepoint.
|
|
|
|
declare i32 @foo()
|
|
|
|
define i32 @test1(i1 %cond, i32 %a) gc "statepoint-example" {
|
|
entry:
|
|
br i1 %cond, label %branch1, label %branch2
|
|
|
|
branch1:
|
|
%b = add i32 %a, 1
|
|
br label %merge
|
|
|
|
branch2:
|
|
br label %merge
|
|
|
|
merge:
|
|
;; CHECK: %phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ]
|
|
;; CHECK-NEXT: [[TOKEN:%[^ ]+]] = call token (i64, i32, i32 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i32f(i64 2882400000, i32 0, i32 ()* @foo, i32 0, i32 0, i32 0, i32 0
|
|
;; CHECK-NEXT: call i32 @llvm.experimental.gc.result.i32(token [[TOKEN]])
|
|
%phi = phi i32 [ %a, %branch2 ], [ %b, %branch1 ]
|
|
%ret = call i32 @foo()
|
|
ret i32 %ret
|
|
}
|
|
|
|
; This function is inlined when inserting a poll.
|
|
declare void @do_safepoint()
|
|
define void @gc.safepoint_poll() {
|
|
; CHECK-LABEL: gc.safepoint_poll
|
|
entry:
|
|
call void @do_safepoint()
|
|
ret void
|
|
}
|