forked from OSchip/llvm-project
33 lines
958 B
LLVM
33 lines
958 B
LLVM
|
; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
|
||
|
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
|
||
|
;
|
||
|
; Makes sure we have a sane model if both successors of some block is the same
|
||
|
; block.
|
||
|
|
||
|
define i32 @foo(i1 %a) {
|
||
|
entry:
|
||
|
%0 = alloca i32, align 4
|
||
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
||
|
; CHECK-NEXT: store i32 4
|
||
|
store i32 4, i32* %0
|
||
|
br i1 %a, label %Loop.Body, label %Loop.End
|
||
|
|
||
|
Loop.Body:
|
||
|
; CHECK: 3 = MemoryPhi({entry,1},{Loop.End,4})
|
||
|
; CHECK-NEXT: 2 = MemoryDef(3)
|
||
|
; CHECK-NEXT: store i32 5
|
||
|
store i32 5, i32* %0, align 4
|
||
|
br i1 %a, label %Loop.End, label %Loop.End ; WhyDoWeEvenHaveThatLever.gif
|
||
|
|
||
|
Loop.End:
|
||
|
; CHECK: 4 = MemoryPhi({entry,1},{Loop.Body,2},{Loop.Body,2})
|
||
|
; CHECK-NEXT: MemoryUse(4)
|
||
|
; CHECK-NEXT: %1 = load
|
||
|
%1 = load i32, i32* %0, align 4
|
||
|
%2 = icmp eq i32 5, %1
|
||
|
br i1 %2, label %Ret, label %Loop.Body
|
||
|
|
||
|
Ret:
|
||
|
ret i32 %1
|
||
|
}
|