Remove the 'N' modifier from llvm-ar.

[oota-llvm.git] / test / Transforms / LoopIdiom / basic.ll

diff --git a/test/Transforms/LoopIdiom/basic.ll b/test/Transforms/LoopIdiom/basic.ll
index 485114c8d480db8d36afb678fc2472621bc85310..06a5bd90864db8feebb2f5ea1f81364a8d5e1c3c 100644 (file)
--- a/test/Transforms/LoopIdiom/basic.ll
+++ b/test/Transforms/LoopIdiom/basic.ll
@@ -62,8 +62,8 @@ for.end:                                          ; preds = %for.body, %entry
   ret void
 ; CHECK: @test2
 ; CHECK: br i1 %cmp10,
-; CHECK: %tmp = mul i64 %Size, 4
-; CHECK: call void @llvm.memset.p0i8.i64(i8* %Base1, i8 1, i64 %tmp, i32 4, i1 false)
+; CHECK: %0 = mul i64 %Size, 4
+; CHECK: call void @llvm.memset.p0i8.i64(i8* %Base1, i8 1, i64 %0, i32 4, i1 false)
 ; CHECK-NOT: store
 }
 
@@ -347,3 +347,73 @@ for.end:                                          ; preds = %for.body
 ; CHECK-NOT: store
 ; CHECK: ret void
 }
+
+
+
+; PR9815 - This is a partial overlap case that cannot be safely transformed
+; into a memcpy.
+@g_50 = global [7 x i32] [i32 0, i32 0, i32 0, i32 0, i32 1, i32 0, i32 0], align 16
+
+define i32 @test14() nounwind {
+entry:
+  br label %for.body
+
+for.body:                                         ; preds = %for.inc, %for.body.lr.ph
+  %tmp5 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
+  %add = add nsw i32 %tmp5, 4
+  %idxprom = sext i32 %add to i64
+  %arrayidx = getelementptr inbounds [7 x i32]* @g_50, i32 0, i64 %idxprom
+  %tmp2 = load i32* %arrayidx, align 4
+  %add4 = add nsw i32 %tmp5, 5
+  %idxprom5 = sext i32 %add4 to i64
+  %arrayidx6 = getelementptr inbounds [7 x i32]* @g_50, i32 0, i64 %idxprom5
+  store i32 %tmp2, i32* %arrayidx6, align 4
+  %inc = add nsw i32 %tmp5, 1
+  %cmp = icmp slt i32 %inc, 2
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.inc
+  %tmp8 = load i32* getelementptr inbounds ([7 x i32]* @g_50, i32 0, i64 6), align 4
+  ret i32 %tmp8
+; CHECK: @test14
+; CHECK: for.body:
+; CHECK: load i32
+; CHECK: store i32
+; CHECK: br i1 %cmp
+
+}
+
+define void @PR14241(i32* %s, i64 %size) {
+; Ensure that we don't form a memcpy for strided loops. Briefly, when we taught
+; LoopIdiom about memmove and strided loops, this got miscompiled into a memcpy
+; instead of a memmove. If we get the memmove transform back, this will catch
+; regressions.
+;
+; CHECK: @PR14241
+
+entry:
+  %end.idx = add i64 %size, -1
+  %end.ptr = getelementptr inbounds i32* %s, i64 %end.idx
+  br label %while.body
+; CHECK-NOT: memcpy
+;
+; FIXME: When we regain the ability to form a memmove here, this test should be
+; reversed and turned into a positive assertion.
+; CHECK-NOT: memmove
+
+while.body:
+  %phi.ptr = phi i32* [ %s, %entry ], [ %next.ptr, %while.body ]
+  %src.ptr = getelementptr inbounds i32* %phi.ptr, i64 1
+  %val = load i32* %src.ptr, align 4
+; CHECK: load
+  %dst.ptr = getelementptr inbounds i32* %phi.ptr, i64 0
+  store i32 %val, i32* %dst.ptr, align 4
+; CHECK: store
+  %next.ptr = getelementptr inbounds i32* %phi.ptr, i64 1
+  %cmp = icmp eq i32* %next.ptr, %end.ptr
+  br i1 %cmp, label %exit, label %while.body
+
+exit:
+  ret void
+; CHECK: ret void
+}