40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
|
|
|
|
; When merging MustAlias and PartialAlias, merge to PartialAlias
|
|
; instead of MayAlias.
|
|
|
|
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
|
|
; CHECK: PartialAlias: i16* %bigbase0, i8* %phi
|
|
define i8 @test0(i8* %base, i1 %x) {
|
|
entry:
|
|
%baseplusone = getelementptr i8, i8* %base, i64 1
|
|
br i1 %x, label %red, label %green
|
|
red:
|
|
br label %green
|
|
green:
|
|
%phi = phi i8* [ %baseplusone, %red ], [ %base, %entry ]
|
|
store i8 0, i8* %phi
|
|
|
|
%bigbase0 = bitcast i8* %base to i16*
|
|
store i16 -1, i16* %bigbase0
|
|
|
|
%loaded = load i8, i8* %phi
|
|
ret i8 %loaded
|
|
}
|
|
|
|
; CHECK: PartialAlias: i16* %bigbase1, i8* %sel
|
|
define i8 @test1(i8* %base, i1 %x) {
|
|
entry:
|
|
%baseplusone = getelementptr i8, i8* %base, i64 1
|
|
%sel = select i1 %x, i8* %baseplusone, i8* %base
|
|
store i8 0, i8* %sel
|
|
|
|
%bigbase1 = bitcast i8* %base to i16*
|
|
store i16 -1, i16* %bigbase1
|
|
|
|
%loaded = load i8, i8* %sel
|
|
ret i8 %loaded
|
|
}
|