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authorJohn Criswell <criswell@uiuc.edu>2005-07-14 19:56:03 +0000
committerJohn Criswell <criswell@uiuc.edu>2005-07-14 19:56:03 +0000
commit8bf0f649234fe47e4755bfd816a9877a9e86f3b5 (patch)
tree9f5cd7194ce56600abe7bab08935692a39b3eca5
parentce4e1e419e89c89f98699f74a453412a328d1cfb (diff)
Regression test for PR#596: Make sure that negation of a minus doesn't
turn into a C predecrement operator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22438 91177308-0d34-0410-b5e6-96231b3b80d8
-rw-r--r--test/CodeGen/CBackend/2005-07-14-NegationToMinusMinus.ll19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/CodeGen/CBackend/2005-07-14-NegationToMinusMinus.ll b/test/CodeGen/CBackend/2005-07-14-NegationToMinusMinus.ll
new file mode 100644
index 0000000000..9880456dbe
--- /dev/null
+++ b/test/CodeGen/CBackend/2005-07-14-NegationToMinusMinus.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | llc -march=c | not grep "\-\-65535"
+; ModuleID = '<stdin>'
+target endian = little
+target pointersize = 32
+target triple = "i686-pc-linux-gnu"
+
+implementation ; Functions:
+
+declare void %func(int)
+
+void %funcb() {
+entry:
+ %tmp.1 = sub int 0, -65535 ; <int> [#uses=1]
+ call void %func( int %tmp.1 )
+ br label %return
+
+return: ; preds = %entry
+ ret void
+}