diff options
| author | Eli Friedman <eli.friedman@gmail.com> | 2011-04-07 01:35:06 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2011-04-07 01:35:06 +0000 |
| commit | 0e382192c1a7750a157e470f749645ac2266d317 (patch) | |
| tree | cd328ba43055ebcc9e2cc897f5608617528799c5 /test | |
| parent | 8424a60fc9059d4ba7c45c80d28d86e3186fcf4e (diff) | |
PR9634: Don't unconditionally tell the AliasSetTracker that the PreheaderLoad
is equivalent to any other relevant value; it isn't true in general.
If it is equivalent, the LoopPromoter will tell the AST the equivalence.
Also, delete the PreheaderLoad if it is unused.
Chris, since you were the last one to make major changes here, can you check
that this is sane?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129049 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Analysis/BasicAA/store-promote.ll | 2 | ||||
| -rw-r--r-- | test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll | 4 | ||||
| -rw-r--r-- | test/Transforms/LICM/2011-04-06-PromoteResultOfPromotion.ll | 37 |
3 files changed, 41 insertions, 2 deletions
diff --git a/test/Analysis/BasicAA/store-promote.ll b/test/Analysis/BasicAA/store-promote.ll index 33d0f3a544..0db805c3e2 100644 --- a/test/Analysis/BasicAA/store-promote.ll +++ b/test/Analysis/BasicAA/store-promote.ll @@ -24,7 +24,7 @@ Out: ; preds = %Loop ; The Loop block should be empty after the load/store are promoted. ; CHECK: @test1 -; CHECK: load i32* @B +; CHECK: load i32* @A ; CHECK: Loop: ; CHECK-NEXT: br i1 %c, label %Out, label %Loop ; CHECK: Out: diff --git a/test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll b/test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll index 59f1dcbe2d..e3d0d02edd 100644 --- a/test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll +++ b/test/Transforms/LICM/2007-10-01-PromoteSafeValue.ll @@ -1,4 +1,4 @@ -; RUN: opt < %s -licm -S | grep promoted +; RUN: opt < %s -licm -S | FileCheck %s ; Promote value if at least one use is safe @@ -15,6 +15,8 @@ cond.true: ; preds = %loop.head store i32 40, i32* %p br label %loop.head +; CHECK: exit: +; CHECK: store i32 20, i32* %p exit: ; preds = %loop.head ret i32 0 } diff --git a/test/Transforms/LICM/2011-04-06-PromoteResultOfPromotion.ll b/test/Transforms/LICM/2011-04-06-PromoteResultOfPromotion.ll new file mode 100644 index 0000000000..86c2679b07 --- /dev/null +++ b/test/Transforms/LICM/2011-04-06-PromoteResultOfPromotion.ll @@ -0,0 +1,37 @@ +; RUN: opt < %s -tbaa -licm -S | FileCheck %s +; PR9634 + +@g_58 = common global i32 0, align 4 +@g_116 = common global i32* null, align 8 + +define void @f() nounwind { + +; CHECK: entry: +; CHECK: alloca [9 x i16] +; CHECK: load i32* @g_58 +; CHECK: br label %for.body + +entry: + %l_87.i = alloca [9 x i16], align 16 + br label %for.body + +for.body: ; preds = %entry, %for.inc + %inc12 = phi i32 [ 0, %entry ], [ %inc, %for.body ] + store i32* @g_58, i32** @g_116, align 8, !tbaa !0 + %tmp2 = load i32** @g_116, align 8, !tbaa !0 + %tmp3 = load i32* %tmp2, !tbaa !4 + %or = or i32 %tmp3, 10 + store i32 %or, i32* %tmp2, !tbaa !4 + %inc = add nsw i32 %inc12, 1 + %cmp = icmp slt i32 %inc, 4 + br i1 %cmp, label %for.body, label %for.end + +for.end: ; preds = %for.inc + ret void +} + +!0 = metadata !{metadata !"any pointer", metadata !1} +!1 = metadata !{metadata !"omnipotent char", metadata !2} +!2 = metadata !{metadata !"Simple C/C++ TBAA", null} +!3 = metadata !{metadata !"short", metadata !1} +!4 = metadata !{metadata !"int", metadata !1} |