summaryrefslogtreecommitdiff
path: root/test/Transforms/IndVarSimplify/loop_evaluate10.ll
diff options
context:
space:
mode:
Diffstat (limited to 'test/Transforms/IndVarSimplify/loop_evaluate10.ll')
-rw-r--r--test/Transforms/IndVarSimplify/loop_evaluate10.ll47
1 files changed, 47 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/loop_evaluate10.ll b/test/Transforms/IndVarSimplify/loop_evaluate10.ll
new file mode 100644
index 000000000000..4ec4acadb4a5
--- /dev/null
+++ b/test/Transforms/IndVarSimplify/loop_evaluate10.ll
@@ -0,0 +1,47 @@
+; RUN: opt < %s -indvars -S \
+; RUN: | grep {%b.1 = phi i32 \\\[ 2, %bb \\\], \\\[ 1, %bb2 \\\]}
+
+; This loop has multiple exits, and the value of %b1 depends on which
+; exit is taken. Indvars should correctly compute the exit values.
+
+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"
+target triple = "x86_64-linux-gnu"
+ %struct..0anon = type <{ i8, [3 x i8] }>
+
+define i32 @main() nounwind {
+entry:
+ br label %bb2
+
+bb2: ; preds = %bb, %entry
+ %sdata.0 = phi i32 [ 1, %entry ], [ %ins10, %bb ] ; <i32> [#uses=2]
+ %b.0 = phi i32 [ 0, %entry ], [ %t0, %bb ] ; <i32> [#uses=2]
+ %tmp6 = trunc i32 %sdata.0 to i8 ; <i8> [#uses=2]
+ %t2 = and i8 %tmp6, 1 ; <i8> [#uses=1]
+ %t3 = icmp eq i8 %t2, 0 ; <i1> [#uses=1]
+ %t4 = xor i8 %tmp6, 1 ; <i8> [#uses=1]
+ %tmp8 = zext i8 %t4 to i32 ; <i32> [#uses=1]
+ %mask9 = and i32 %sdata.0, -256 ; <i32> [#uses=1]
+ %ins10 = or i32 %tmp8, %mask9 ; <i32> [#uses=1]
+ br i1 %t3, label %bb3, label %bb
+
+bb: ; preds = %bb2
+ %t0 = add i32 %b.0, 1 ; <i32> [#uses=3]
+ %t1 = icmp sgt i32 %t0, 100 ; <i1> [#uses=1]
+ br i1 %t1, label %bb3, label %bb2
+
+bb3: ; preds = %bb, %bb2
+ %b.1 = phi i32 [ %t0, %bb ], [ %b.0, %bb2 ] ; <i32> [#uses=1]
+ %t5 = icmp eq i32 %b.1, 1 ; <i1> [#uses=1]
+ br i1 %t5, label %bb5, label %bb4
+
+bb4: ; preds = %bb3
+ tail call void @abort() noreturn nounwind
+ unreachable
+
+bb5: ; preds = %bb3
+ ret i32 0
+}
+
+declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind
+
+declare void @abort() noreturn nounwind