| Chad Rosier | 232e29e | 2016-07-06 21:20:47 +0000 | [diff] [blame] | 1 | ; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s |
| Geoff Berry | b96d3b2 | 2016-06-01 21:30:40 +0000 | [diff] [blame] | 2 | ; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s |
| George Burgess IV | e1100f5 | 2016-02-02 22:46:49 +0000 | [diff] [blame] | 3 | ; |
| 4 | ; Ensuring that external functions without attributes are MemoryDefs |
| 5 | |
| 6 | @g = external global i32 |
| 7 | declare void @modifyG() |
| 8 | |
| 9 | define i32 @foo() { |
| 10 | ; CHECK: MemoryUse(liveOnEntry) |
| 11 | ; CHECK-NEXT: %1 = load i32 |
| 12 | %1 = load i32, i32* @g |
| 13 | |
| 14 | ; CHECK: 1 = MemoryDef(liveOnEntry) |
| 15 | ; CHECK-NEXT: store i32 4 |
| 16 | store i32 4, i32* @g, align 4 |
| 17 | |
| 18 | ; CHECK: 2 = MemoryDef(1) |
| 19 | ; CHECK-NEXT: call void @modifyG() |
| 20 | call void @modifyG() |
| 21 | |
| 22 | ; CHECK: MemoryUse(2) |
| 23 | ; CHECK-NEXT: %2 = load i32 |
| 24 | %2 = load i32, i32* @g |
| 25 | %3 = add i32 %2, %1 |
| 26 | ret i32 %3 |
| 27 | } |
| George Burgess IV | 49cad7d | 2016-03-30 03:12:08 +0000 | [diff] [blame] | 28 | |
| 29 | declare void @readEverything() readonly |
| 30 | declare void @clobberEverything() |
| 31 | |
| 32 | ; CHECK-LABEL: define void @bar |
| 33 | define void @bar() { |
| 34 | ; CHECK: 1 = MemoryDef(liveOnEntry) |
| 35 | ; CHECK-NEXT: call void @clobberEverything() |
| 36 | call void @clobberEverything() |
| 37 | br i1 undef, label %if.end, label %if.then |
| 38 | |
| 39 | if.then: |
| 40 | ; CHECK: MemoryUse(1) |
| 41 | ; CHECK-NEXT: call void @readEverything() |
| 42 | call void @readEverything() |
| 43 | ; CHECK: 2 = MemoryDef(1) |
| 44 | ; CHECK-NEXT: call void @clobberEverything() |
| 45 | call void @clobberEverything() |
| 46 | br label %if.end |
| 47 | |
| 48 | if.end: |
| 49 | ; CHECK: 3 = MemoryPhi({%0,1},{if.then,2}) |
| 50 | ; CHECK: MemoryUse(3) |
| 51 | ; CHECK-NEXT: call void @readEverything() |
| 52 | call void @readEverything() |
| 53 | ret void |
| 54 | } |