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-rw-r--r--test/Transforms/InstCombine/logical-select.ll54
1 files changed, 54 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/logical-select.ll b/test/Transforms/InstCombine/logical-select.ll
new file mode 100644
index 0000000000000..3bb2d348b3837
--- /dev/null
+++ b/test/Transforms/InstCombine/logical-select.ll
@@ -0,0 +1,54 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis > %t
+; RUN: grep select %t | count 5
+; RUN: not grep and %t
+; RUN: not grep or %t
+
+define i32 @foo(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
+ %e = icmp slt i32 %a, %b
+ %f = sext i1 %e to i32
+ %g = and i32 %c, %f
+ %h = xor i32 %f, -1
+ %i = and i32 %d, %h
+ %j = or i32 %g, %i
+ ret i32 %j
+}
+define i32 @bar(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
+ %e = icmp slt i32 %a, %b
+ %f = sext i1 %e to i32
+ %g = and i32 %c, %f
+ %h = xor i32 %f, -1
+ %i = and i32 %d, %h
+ %j = or i32 %i, %g
+ ret i32 %j
+}
+define i32 @goo(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
+entry:
+ %0 = icmp slt i32 %a, %b
+ %iftmp.0.0 = select i1 %0, i32 -1, i32 0
+ %1 = and i32 %iftmp.0.0, %c
+ %not = xor i32 %iftmp.0.0, -1
+ %2 = and i32 %not, %d
+ %3 = or i32 %1, %2
+ ret i32 %3
+}
+define i32 @poo(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
+entry:
+ %0 = icmp slt i32 %a, %b
+ %iftmp.0.0 = select i1 %0, i32 -1, i32 0
+ %1 = and i32 %iftmp.0.0, %c
+ %iftmp = select i1 %0, i32 0, i32 -1
+ %2 = and i32 %iftmp, %d
+ %3 = or i32 %1, %2
+ ret i32 %3
+}
+
+define i32 @par(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
+entry:
+ %0 = icmp slt i32 %a, %b
+ %iftmp.1.0 = select i1 %0, i32 -1, i32 0
+ %1 = and i32 %iftmp.1.0, %c
+ %not = xor i32 %iftmp.1.0, -1
+ %2 = and i32 %not, %d
+ %3 = or i32 %1, %2
+ ret i32 %3
+}