1 files changed, 90 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/ada-loops.ll b/test/Transforms/IndVarSimplify/ada-loops.ll
new file mode 100644
index 0000000000000..56325b36cbbef
--- /dev/null
+++ b/test/Transforms/IndVarSimplify/ada-loops.ll
@@ -0,0 +1,90 @@
+; RUN: llvm-as < %s | opt -indvars | llvm-dis > %t
+; RUN: grep phi %t | count 4
+; RUN: grep {= phi i32} %t | count 4
+; RUN: not grep {sext i} %t
+; RUN: not grep {zext i} %t
+; RUN: not grep {trunc i} %t
+; RUN: not grep {add i8} %t
+; PR1301
+
+; Do a bunch of analysis and prove that the loops can use an i32 trip
+; count without casting.
+
+; ModuleID = 'ada.bc'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
+target triple = "i686-pc-linux-gnu"
+
+define void @kinds__sbytezero([256 x i32]* nocapture %a) nounwind {
+bb.thread:
+	%tmp46 = getelementptr [256 x i32]* %a, i32 0, i32 0		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp46
+	br label %bb
+
+bb:		; preds = %bb, %bb.thread
+	%i.0.reg2mem.0 = phi i8 [ -128, %bb.thread ], [ %tmp8, %bb ]		; <i8> [#uses=1]
+	%tmp8 = add i8 %i.0.reg2mem.0, 1		; <i8> [#uses=3]
+	%tmp1 = sext i8 %tmp8 to i32		; <i32> [#uses=1]
+	%tmp3 = add i32 %tmp1, 128		; <i32> [#uses=1]
+	%tmp4 = getelementptr [256 x i32]* %a, i32 0, i32 %tmp3		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp4
+	%0 = icmp eq i8 %tmp8, 127		; <i1> [#uses=1]
+	br i1 %0, label %return, label %bb
+
+return:		; preds = %bb
+	ret void
+}
+
+define void @kinds__ubytezero([256 x i32]* nocapture %a) nounwind {
+bb.thread:
+	%tmp35 = getelementptr [256 x i32]* %a, i32 0, i32 0		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp35
+	br label %bb
+
+bb:		; preds = %bb, %bb.thread
+	%i.0.reg2mem.0 = phi i8 [ 0, %bb.thread ], [ %tmp7, %bb ]		; <i8> [#uses=1]
+	%tmp7 = add i8 %i.0.reg2mem.0, 1		; <i8> [#uses=3]
+	%tmp1 = zext i8 %tmp7 to i32		; <i32> [#uses=1]
+	%tmp3 = getelementptr [256 x i32]* %a, i32 0, i32 %tmp1		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp3
+	%0 = icmp eq i8 %tmp7, -1		; <i1> [#uses=1]
+	br i1 %0, label %return, label %bb
+
+return:		; preds = %bb
+	ret void
+}
+
+define void @kinds__srangezero([21 x i32]* nocapture %a) nounwind {
+bb.thread:
+	br label %bb
+
+bb:		; preds = %bb, %bb.thread
+	%i.0.reg2mem.0 = phi i8 [ -10, %bb.thread ], [ %tmp7, %bb ]		; <i8> [#uses=2]
+	%tmp12 = sext i8 %i.0.reg2mem.0 to i32		; <i32> [#uses=1]
+	%tmp4 = add i32 %tmp12, 10		; <i32> [#uses=1]
+	%tmp5 = getelementptr [21 x i32]* %a, i32 0, i32 %tmp4		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp5
+	%tmp7 = add i8 %i.0.reg2mem.0, 1		; <i8> [#uses=2]
+	%0 = icmp sgt i8 %tmp7, 10		; <i1> [#uses=1]
+	br i1 %0, label %return, label %bb
+
+return:		; preds = %bb
+	ret void
+}
+
+define void @kinds__urangezero([21 x i32]* nocapture %a) nounwind {
+bb.thread:
+	br label %bb
+
+bb:		; preds = %bb, %bb.thread
+	%i.0.reg2mem.0 = phi i8 [ 10, %bb.thread ], [ %tmp7, %bb ]		; <i8> [#uses=2]
+	%tmp12 = sext i8 %i.0.reg2mem.0 to i32		; <i32> [#uses=1]
+	%tmp4 = add i32 %tmp12, -10		; <i32> [#uses=1]
+	%tmp5 = getelementptr [21 x i32]* %a, i32 0, i32 %tmp4		; <i32*> [#uses=1]
+	store i32 0, i32* %tmp5
+	%tmp7 = add i8 %i.0.reg2mem.0, 1		; <i8> [#uses=2]
+	%0 = icmp sgt i8 %tmp7, 30		; <i1> [#uses=1]
+	br i1 %0, label %return, label %bb
+
+return:		; preds = %bb
+	ret void
+}