Fix PR 4057, a crash doing float->char const folding.
This particular one is undefined behavior (although this
isn't related to the crash), so it will no longer do it
at compile time, which seems better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69990 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Generic/fp-to-int-invalid.ll b/test/CodeGen/Generic/fp-to-int-invalid.ll
new file mode 100644
index 0000000..73176b1
--- /dev/null
+++ b/test/CodeGen/Generic/fp-to-int-invalid.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | llc
+; PR4057
+define void @test_cast_float_to_char(i8* %result) nounwind {
+entry:
+ %result_addr = alloca i8* ; <i8**> [#uses=2]
+ %test = alloca float ; <float*> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ store i8* %result, i8** %result_addr
+ store float 0x40B2AFA160000000, float* %test, align 4
+ %0 = load float* %test, align 4 ; <float> [#uses=1]
+ %1 = fptosi float %0 to i8 ; <i8> [#uses=1]
+ %2 = load i8** %result_addr, align 4 ; <i8*> [#uses=1]
+ store i8 %1, i8* %2, align 1
+ br label %return
+
+return: ; preds = %entry
+ ret void
+}