55 lines
1.4 KiB
LLVM
55 lines
1.4 KiB
LLVM
; RUN: opt -basic-aa -print-memoryssa -verify-memoryssa -enable-new-pm=0 -analyze < %s 2>&1 | FileCheck %s
|
|
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
|
|
;
|
|
; Ensuring that external functions without attributes are MemoryDefs
|
|
|
|
@g = external global i32
|
|
declare void @modifyG()
|
|
|
|
define i32 @foo() {
|
|
; CHECK: MemoryUse(liveOnEntry)
|
|
; CHECK-NEXT: %1 = load i32
|
|
%1 = load i32, i32* @g
|
|
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: store i32 4
|
|
store i32 4, i32* @g, align 4
|
|
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: call void @modifyG()
|
|
call void @modifyG()
|
|
|
|
; CHECK: MemoryUse(2)
|
|
; CHECK-NEXT: %2 = load i32
|
|
%2 = load i32, i32* @g
|
|
%3 = add i32 %2, %1
|
|
ret i32 %3
|
|
}
|
|
|
|
declare void @readEverything() readonly
|
|
declare void @clobberEverything()
|
|
|
|
; CHECK-LABEL: define void @bar
|
|
define void @bar() {
|
|
; CHECK: 1 = MemoryDef(liveOnEntry)
|
|
; CHECK-NEXT: call void @clobberEverything()
|
|
call void @clobberEverything()
|
|
br i1 undef, label %if.end, label %if.then
|
|
|
|
if.then:
|
|
; CHECK: MemoryUse(1)
|
|
; CHECK-NEXT: call void @readEverything()
|
|
call void @readEverything()
|
|
; CHECK: 2 = MemoryDef(1)
|
|
; CHECK-NEXT: call void @clobberEverything()
|
|
call void @clobberEverything()
|
|
br label %if.end
|
|
|
|
if.end:
|
|
; CHECK: 3 = MemoryPhi({%0,1},{if.then,2})
|
|
; CHECK: MemoryUse(3)
|
|
; CHECK-NEXT: call void @readEverything()
|
|
call void @readEverything()
|
|
ret void
|
|
}
|