PR2659 was fixed by r61847. Add the testcase as a regression test.

llvm-svn: 61986

1 files changed, 33 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/pr2659.ll b/llvm/test/CodeGen/X86/pr2659.ll
new file mode 100644
index 00000000000..00e6e7bd830
--- /dev/null
+++ b/llvm/test/CodeGen/X86/pr2659.ll
@@ -0,0 +1,33 @@
+; RUN: llvm-as < %s | llc -march=x86 -mtriple=i686-apple-darwin9.4.0 | grep movl | count 5
+; PR2659
+
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+target triple = "i686-apple-darwin9.4.0"
+
+define i32 @binomial(i32 %n, i32 %k) nounwind  {
+entry:
+  %cmp = icmp ugt i32 %k, %n            ; <i1> [#uses=1]
+  br i1 %cmp, label %ifthen, label %forcond.preheader
+
+forcond.preheader:              ; preds = %entry
+  %cmp44 = icmp eq i32 %k, 0            ; <i1> [#uses=1]
+  br i1 %cmp44, label %afterfor, label %forbody
+
+ifthen:         ; preds = %entry
+  ret i32 0
+
+forbody:                ; preds = %forbody, %forcond.preheader
+  %indvar = phi i32 [ 0, %forcond.preheader ], [ %divisor.02, %forbody ]                ; <i32> [#uses=3]
+  %accumulator.01 = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ]               ; <i32> [#uses=1]
+  %divisor.02 = add i32 %indvar, 1              ; <i32> [#uses=2]
+  %n.addr.03 = sub i32 %n, %indvar              ; <i32> [#uses=1]
+  %mul = mul i32 %n.addr.03, %accumulator.01            ; <i32> [#uses=1]
+  %div = udiv i32 %mul, %divisor.02             ; <i32> [#uses=2]
+  %inc = add i32 %indvar, 2             ; <i32> [#uses=1]
+  %cmp4 = icmp ugt i32 %inc, %k         ; <i1> [#uses=1]
+  br i1 %cmp4, label %afterfor, label %forbody
+
+afterfor:               ; preds = %forbody, %forcond.preheader
+  %accumulator.0.lcssa = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ]          ; <i32> [#uses=1]
+  ret i32 %accumulator.0.lcssa
+}