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llvm-mirror/test/Analysis/MemorySSA/optimize-use.ll
Daniel Berlin e485ce96aa MemorySSA: Move to Analysis, from Transforms/Utils. It's used as
Analysis, it has Analysis passes, and once NewGVN is made an Analysis,
this removes the cross dependency from Analysis to Transform/Utils.
NFC.

llvm-svn: 299980
2017-04-11 20:06:36 +00:00

38 lines
1.3 KiB
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
; Function Attrs: ssp uwtable
define i32 @main() {
entry:
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: %call = call noalias i8* @_Znwm(i64 4)
%call = call noalias i8* @_Znwm(i64 4)
%0 = bitcast i8* %call to i32*
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: %call1 = call noalias i8* @_Znwm(i64 4)
%call1 = call noalias i8* @_Znwm(i64 4)
%1 = bitcast i8* %call1 to i32*
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: store i32 5, i32* %0, align 4
store i32 5, i32* %0, align 4
; CHECK: 4 = MemoryDef(3)
; CHECK-NEXT: store i32 7, i32* %1, align 4
store i32 7, i32* %1, align 4
; CHECK: MemoryUse(3)
; CHECK-NEXT: %2 = load i32, i32* %0, align 4
%2 = load i32, i32* %0, align 4
; CHECK: MemoryUse(4)
; CHECK-NEXT: %3 = load i32, i32* %1, align 4
%3 = load i32, i32* %1, align 4
; CHECK: MemoryUse(3)
; CHECK-NEXT: %4 = load i32, i32* %0, align 4
%4 = load i32, i32* %0, align 4
; CHECK: MemoryUse(4)
; CHECK-NEXT: %5 = load i32, i32* %1, align 4
%5 = load i32, i32* %1, align 4
%add = add nsw i32 %3, %5
ret i32 %add
}
declare noalias i8* @_Znwm(i64)