testcase for recent dag combiner patch. Before the entry bb was:

_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr7, r2, 2
        mfcr r2
        rlwinm r2, r2, 30, 31, 31
        cmplwi cr0, r2, 0
        bne cr0, LBB1_2 ;UnifiedReturnBlock

after it is:

_test:
        stwu r1, -80(r1)
        stw r1, 76(r1)
        mflr r11
        stw r11, 88(r1)
        rlwinm r2, r4, 0, 30, 31
        cmplwi cr0, r2, 2
        bgt cr0, LBB1_2 ;UnifiedReturnBlock

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30954 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/PowerPC/cmp-cmp.ll b/test/CodeGen/PowerPC/cmp-cmp.ll
new file mode 100644 (file)
index 0000000..5a9e8e8
--- /dev/null
+++ b/test/CodeGen/PowerPC/cmp-cmp.ll
@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc -march=ppc32 &&
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep mfcr
+
+void %test(long %X) {
+        %tmp1 = and long %X, 3          ; <long> [#uses=1]
+        %tmp = setgt long %tmp1, 2              ; <bool> [#uses=1]
+        br bool %tmp, label %UnifiedReturnBlock, label %cond_true
+
+cond_true:              ; preds = %entry
+        tail call void %test(long 0)
+        ret void
+
+UnifiedReturnBlock:             ; preds = %entry
+        ret void
+}
+