first half of a pass through IndVarSimplify::HandleFloatingPointIV,
this cleans up a bunch of code and also fixes several crashes and
miscompiles. More to come unfortunately, this optimization
is quite broken.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100270 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/IndVarSimplify/crash.ll b/test/Transforms/IndVarSimplify/crash.ll
new file mode 100644
index 0000000..14f79fe
--- /dev/null
+++ b/test/Transforms/IndVarSimplify/crash.ll
@@ -0,0 +1,19 @@
+; RUN: opt -indvars %s -disable-output
+
+declare i32 @putchar(i8) nounwind
+
+define void @t2(i1* %P) nounwind {
+; <label>:0
+ br label %1
+
+; <label>:1 ; preds = %1, %0
+ %2 = phi double [ 9.000000e+00, %0 ], [ %4, %1 ] ; <double> [#uses=1]
+ %3 = tail call i32 @putchar(i8 72) ; <i32> [#uses=0]
+ %4 = fadd double %2, -1.000000e+00 ; <double> [#uses=2]
+ %5 = fcmp ult double %4, 0.000000e+00 ; <i1> [#uses=1]
+ store i1 %5, i1* %P
+ br i1 %5, label %6, label %1
+
+; <label>:6 ; preds = %1
+ ret void
+}
\ No newline at end of file