[SCCP] Don't violate the lattice invariants

[oota-llvm.git] / test / Transforms / IPConstantProp / PR16052.ll

diff --git a/test/Transforms/IPConstantProp/PR16052.ll b/test/Transforms/IPConstantProp/PR16052.ll
new file mode 100644 (file)
index 0000000..959074d
--- /dev/null
+++ b/test/Transforms/IPConstantProp/PR16052.ll
@@ -0,0 +1,26 @@
+; RUN: opt < %s -S -ipsccp | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i64 @fn2() {
+entry:
+  %conv = sext i32 undef to i64
+  %div = sdiv i64 8, %conv
+  %call2 = call i64 @fn1(i64 %div)
+  ret i64 %call2
+}
+
+; CHECK-DAG: define i64 @fn2(
+; CHECK: %[[CALL:.*]] = call i64 @fn1(i64 undef)
+
+define internal i64 @fn1(i64 %p1) {
+entry:
+  %tobool = icmp ne i64 %p1, 0
+  %cond = select i1 %tobool, i64 %p1, i64 %p1
+  ret i64 %cond
+}
+
+; CHECK-DAG: define internal i64 @fn1(
+; CHECK: %[[SEL:.*]] = select i1 undef, i64 undef, i64 undef
+; CHECK: ret i64 %[[SEL]]