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Add a test for MemorySSA. NFC.

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We don't currently have many tests that deal with operations on multiple
local MemoryLocations. This new test helps out a bit in that regard.

llvm-svn: 259854
This commit is contained in:
George Burgess IV 2016-02-05 00:42:02 +00:00
parent 7a50d8e1d0
commit 9be1180e28
1 changed files with 24 additions and 0 deletions
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24
test/Transforms/Util/MemorySSA/multiple-locations.ll Normal file
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; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
;
; Checks that basicAA is doing some amount of disambiguation for us
define i32 @foo(i1 %cond) {
%a = alloca i32, align 4
%b = alloca i32, align 4
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: store i32 0
store i32 0, i32* %a, align 4
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: store i32 1
store i32 1, i32* %b, align 4
; CHECK: MemoryUse(1)
; CHECK-NEXT: %1 = load i32
%1 = load i32, i32* %a, align 4
; CHECK: MemoryUse(2)
; CHECK-NEXT: %2 = load i32
%2 = load i32, i32* %b, align 4
%3 = add i32 %1, %2
ret i32 %3
}