New testcases for PR1179/PR1232.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34895 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/IndVarsSimplify/loop_evaluate_2.ll b/test/Transforms/IndVarsSimplify/loop_evaluate_2.ll
new file mode 100644 (file)
index 0000000..e11e327
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/loop_evaluate_2.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | grep select &&
+; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | not grep br
+; PR1179
+
+define i32 @ltst(i32 %x) {
+entry:
+        icmp sgt i32 %x, 0              ; <i1>:0 [#uses=1]
+        br i1 %0, label %bb.preheader, label %bb8
+
+bb.preheader:           ; preds = %entry
+        br label %bb
+
+bb:             ; preds = %bb, %bb.preheader
+        %i.01.0 = phi i32 [ %tmp4, %bb ], [ 0, %bb.preheader ]          ; <i32> [#uses=1]
+        %j.03.0 = phi i32 [ %tmp2, %bb ], [ 0, %bb.preheader ]          ; <i32> [#uses=1]
+        %tmp4 = add i32 %i.01.0, 1              ; <i32> [#uses=2]
+        %tmp2 = add i32 %j.03.0, 1              ; <i32> [#uses=2]
+        icmp slt i32 %tmp4, %x          ; <i1>:1 [#uses=1]
+        br i1 %1, label %bb, label %bb8.loopexit
+
+bb8.loopexit:           ; preds = %bb
+        br label %bb8
+
+bb8:            ; preds = %bb8.loopexit, %entry
+        %j.03.1 = phi i32 [ 0, %entry ], [ %tmp2, %bb8.loopexit ]               ; <i32> [#uses=1]
+        ret i32 %j.03.1
+}
+

diff --git a/test/Transforms/IndVarsSimplify/loop_evaluate_3.ll b/test/Transforms/IndVarsSimplify/loop_evaluate_3.ll
new file mode 100644 (file)
index 0000000..155e8b4
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/loop_evaluate_3.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep 'ret i32 600000'
+; PR1179
+
+define i32 @foo() {
+entry:
+        br label %bb5
+
+bb5:            ; preds = %bb5, %entry
+        %i.01.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb5 ]                ; <i32> [#uses=1]
+        %x.03.0 = phi i32 [ 0, %entry ], [ %tmp4, %bb5 ]                ; <i32> [#uses=1]
+        %tmp2 = add i32 %i.01.0, 3              ; <i32> [#uses=2]
+        %tmp4 = add i32 %x.03.0, 1              ; <i32> [#uses=2]
+        icmp slt i32 %tmp4, 200000              ; <i1>:0 [#uses=1]
+        br i1 %0, label %bb5, label %bb7
+
+bb7:            ; preds = %bb5
+        ret i32 %tmp2
+}
+

diff --git a/test/Transforms/IndVarsSimplify/loop_evaluate_4.ll b/test/Transforms/IndVarsSimplify/loop_evaluate_4.ll
new file mode 100644 (file)
index 0000000..feb56ed
--- /dev/null
+++ b/test/Transforms/IndVarsSimplify/loop_evaluate_4.ll
@@ -0,0 +1,20 @@
+; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep 'ret i32 9900'
+; PR1179
+
+define i32 @test4() {
+entry:
+        br label %bb7
+
+bb7:            ; preds = %bb7, %entry
+        %v.01.0 = phi i32 [ 0, %entry ], [ %tmp4, %bb7 ]                ; <i32> [#uses=1]
+        %i.03.0 = phi i32 [ 0, %entry ], [ %tmp6, %bb7 ]                ; <i32> [#uses=2]
+        %tmp2 = shl i32 %i.03.0, 1              ; <i32> [#uses=1]
+        %tmp4 = add i32 %tmp2, %v.01.0          ; <i32> [#uses=2]
+        %tmp6 = add i32 %i.03.0, 1              ; <i32> [#uses=2]
+        icmp slt i32 %tmp6, 100         ; <i1>:0 [#uses=1]
+        br i1 %0, label %bb7, label %bb9
+
+bb9:            ; preds = %bb7
+        ret i32 %tmp4
+}
+