38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
|
; RUN: opt -S -place-safepoints < %s -enable-new-pm=0 | FileCheck %s
|
||
|
|
|
||
|
|
; Libcalls will not contain a safepoint poll, so check that we insert
|
||
|
|
; a safepoint in a loop containing a libcall.
|
||
|
|
declare double @ldexp(double %x, i32 %n) nounwind readnone
|
||
|
|
define double @test_libcall(double %x) gc "statepoint-example" {
|
||
|
|
; CHECK-LABEL: test_libcall
|
||
|
|
|
||
|
|
entry:
|
||
|
|
; CHECK: entry
|
||
|
|
; CHECK-NEXT: call void @do_safepoint
|
||
|
|
; CHECK-NEXT: br label %loop
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
; CHECK: loop
|
||
|
|
; CHECK-NEXT: %x_loop = phi double [ %x, %entry ], [ %x_exp, %loop ]
|
||
|
|
; CHECK-NEXT: %x_exp = call double @ldexp(double %x_loop, i32 5)
|
||
|
|
; CHECK-NEXT: %done = fcmp ogt double %x_exp, 1.5
|
||
|
|
; CHECK-NEXT: call void @do_safepoint
|
||
|
|
%x_loop = phi double [ %x, %entry ], [ %x_exp, %loop ]
|
||
|
|
%x_exp = call double @ldexp(double %x_loop, i32 5) nounwind readnone
|
||
|
|
%done = fcmp ogt double %x_exp, 1.5
|
||
|
|
br i1 %done, label %end, label %loop
|
||
|
|
end:
|
||
|
|
%x_end = phi double [%x_exp, %loop]
|
||
|
|
ret double %x_end
|
||
|
|
}
|
||
|
|
|
||
|
|
; 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
|
||
|
|
}
|