diff options
Diffstat (limited to 'test/Transforms/GVN')
| -rw-r--r-- | test/Transforms/GVN/2010-03-31-RedundantPHIs.ll | 46 | ||||
| -rw-r--r-- | test/Transforms/GVN/invariant-simple.ll | 2 | ||||
| -rw-r--r-- | test/Transforms/GVN/lifetime-simple.ll | 4 | ||||
| -rw-r--r-- | test/Transforms/GVN/rle.ll | 12 |
4 files changed, 61 insertions, 3 deletions
diff --git a/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll b/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll new file mode 100644 index 0000000..066e303 --- /dev/null +++ b/test/Transforms/GVN/2010-03-31-RedundantPHIs.ll @@ -0,0 +1,46 @@ +; RUN: opt < %s -gvn -enable-full-load-pre -S | FileCheck %s + +define i8* @cat(i8* %s1, ...) nounwind { +entry: + br i1 undef, label %bb, label %bb3 + +bb: ; preds = %entry + unreachable + +bb3: ; preds = %entry + store i8* undef, i8** undef, align 4 + br i1 undef, label %bb5, label %bb6 + +bb5: ; preds = %bb3 + unreachable + +bb6: ; preds = %bb3 + br label %bb12 + +bb8: ; preds = %bb12 + br i1 undef, label %bb9, label %bb10 + +bb9: ; preds = %bb8 + %0 = load i8** undef, align 4 ; <i8*> [#uses=0] + %1 = load i8** undef, align 4 ; <i8*> [#uses=0] + br label %bb11 + +bb10: ; preds = %bb8 + br label %bb11 + +bb11: ; preds = %bb10, %bb9 +; CHECK: bb11: +; CHECK: phi +; CHECK-NOT: phi + br label %bb12 + +bb12: ; preds = %bb11, %bb6 +; CHECK: bb12: +; CHECK: phi +; CHECK-NOT: phi + br i1 undef, label %bb8, label %bb13 + +bb13: ; preds = %bb12 +; CHECK: bb13: + ret i8* undef +} diff --git a/test/Transforms/GVN/invariant-simple.ll b/test/Transforms/GVN/invariant-simple.ll index 6de75f1..0a4182c 100644 --- a/test/Transforms/GVN/invariant-simple.ll +++ b/test/Transforms/GVN/invariant-simple.ll @@ -33,4 +33,4 @@ entry: declare i32 @foo(i8*) nounwind declare i32 @bar(i8*) nounwind readonly declare {}* @llvm.invariant.start(i64 %S, i8* nocapture %P) readonly -declare void @llvm.invariant.end({}* %S, i64 %SS, i8* nocapture %P)
\ No newline at end of file +declare void @llvm.invariant.end({}* %S, i64 %SS, i8* nocapture %P) diff --git a/test/Transforms/GVN/lifetime-simple.ll b/test/Transforms/GVN/lifetime-simple.ll index 8139246..48e5bc8 100644 --- a/test/Transforms/GVN/lifetime-simple.ll +++ b/test/Transforms/GVN/lifetime-simple.ll @@ -16,5 +16,5 @@ entry: ret i8 %1 } -declare {}* @llvm.lifetime.start(i64 %S, i8* nocapture %P) readonly -declare void @llvm.lifetime.end(i64 %S, i8* nocapture %P)
\ No newline at end of file +declare void @llvm.lifetime.start(i64 %S, i8* nocapture %P) readonly +declare void @llvm.lifetime.end(i64 %S, i8* nocapture %P) diff --git a/test/Transforms/GVN/rle.ll b/test/Transforms/GVN/rle.ll index d419fd2..d656c1a 100644 --- a/test/Transforms/GVN/rle.ll +++ b/test/Transforms/GVN/rle.ll @@ -531,4 +531,16 @@ out: } +; PR6642 +define i32 @memset_to_load() nounwind readnone { +entry: + %x = alloca [256 x i32], align 4 ; <[256 x i32]*> [#uses=2] + %tmp = bitcast [256 x i32]* %x to i8* ; <i8*> [#uses=1] + call void @llvm.memset.i64(i8* %tmp, i8 0, i64 1024, i32 4) + %arraydecay = getelementptr inbounds [256 x i32]* %x, i32 0, i32 0 ; <i32*> + %tmp1 = load i32* %arraydecay ; <i32> [#uses=1] + ret i32 %tmp1 +; CHECK: @memset_to_load +; CHECK: ret i32 0 +} |