1 files changed, 32 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/pr33765.ll b/test/Transforms/InstCombine/pr33765.ll
new file mode 100644
index 0000000000000..99ed0d13b5cf5
--- /dev/null
+++ b/test/Transforms/InstCombine/pr33765.ll
@@ -0,0 +1,32 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S %s -instcombine | FileCheck %s
+
+@glob = external global i16
+
+define void @patatino(i8 %beth) {
+; CHECK-LABEL: @patatino(
+; CHECK-NEXT:    [[CONV:%.*]] = zext i8 [[BETH:%.*]] to i32
+; CHECK-NEXT:    br i1 undef, label [[IF_THEN9:%.*]], label [[IF_THEN9]]
+; CHECK:       if.then9:
+; CHECK-NEXT:    [[MUL:%.*]] = mul nuw nsw i32 [[CONV]], [[CONV]]
+; CHECK-NEXT:    [[TINKY:%.*]] = load i16, i16* @glob, align 2
+; CHECK-NEXT:    [[CONV131:%.*]] = zext i16 [[TINKY]] to i32
+; CHECK-NEXT:    [[AND:%.*]] = and i32 [[MUL]], [[CONV131]]
+; CHECK-NEXT:    [[CONV14:%.*]] = trunc i32 [[AND]] to i16
+; CHECK-NEXT:    store i16 [[CONV14]], i16* @glob, align 2
+; CHECK-NEXT:    ret void
+;
+  %conv = zext i8 %beth to i32
+  %mul = mul nuw nsw i32 %conv, %conv
+  %conv3 = and i32 %mul, 255
+  %tobool8 = icmp ne i32 %mul, %conv3
+  br i1 %tobool8, label %if.then9, label %if.then9
+
+if.then9:
+  %tinky = load i16, i16* @glob
+  %conv13 = sext i16 %tinky to i32
+  %and = and i32 %mul, %conv13
+  %conv14 = trunc i32 %and to i16
+  store i16 %conv14, i16* @glob
+  ret void
+}