forked from OSchip/llvm-project
37 lines
1.1 KiB
LLVM
37 lines
1.1 KiB
LLVM
; RUN: opt -S -loop-simplifycfg < %s | FileCheck %s
|
|
; RUN: opt -S -passes='require<domtree>,loop(simplify-cfg)' < %s | FileCheck %s
|
|
; RUN: opt -S -loop-simplifycfg -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s
|
|
|
|
; CHECK-LABEL: foo
|
|
; CHECK: entry:
|
|
; CHECK-NEXT: br label %[[LOOP:[a-z]+]]
|
|
; CHECK: [[LOOP]]:
|
|
; CHECK-NEXT: phi
|
|
; CHECK-NOT: br label
|
|
; CHECK: br i1
|
|
define i32 @foo(i32* %P, i64* %Q) {
|
|
entry:
|
|
br label %outer
|
|
|
|
outer: ; preds = %outer.latch2, %entry
|
|
%y.2 = phi i32 [ 0, %entry ], [ %y.inc2, %outer.latch2 ]
|
|
br label %inner
|
|
|
|
inner: ; preds = %outer
|
|
store i32 0, i32* %P
|
|
store i32 1, i32* %P
|
|
store i32 2, i32* %P
|
|
%y.inc2 = add nsw i32 %y.2, 1
|
|
%exitcond.outer = icmp eq i32 %y.inc2, 3
|
|
store i32 %y.2, i32* %P
|
|
br i1 %exitcond.outer, label %exit, label %outer.latch2
|
|
|
|
outer.latch2: ; preds = %inner
|
|
%t = sext i32 %y.inc2 to i64
|
|
store i64 %t, i64* %Q
|
|
br label %outer
|
|
|
|
exit: ; preds = %inner
|
|
ret i32 0
|
|
}
|