Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions

View File

@@ -0,0 +1,21 @@
; RUN: opt < %s -loop-reduce -S | grep phi | count 1
define void @foo(i32 %n) {
entry:
br label %loop
loop:
%i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
; These three instructions form an isolated cycle and can be deleted.
%j = phi i32 [ 0, %entry ], [ %j.y, %loop ]
%j.x = add i32 %j, 1
%j.y = mul i32 %j.x, 2
%i.next = add i32 %i, 1
%c = icmp ne i32 %i.next, %n
br i1 %c, label %loop, label %exit
exit:
ret void
}