| ; RUN: opt < %s -basic-aa -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 |
| } |
