Testcase for last commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62418 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2009-01-16-UIntToFP.ll b/test/CodeGen/X86/2009-01-16-UIntToFP.ll
new file mode 100644 (file)
index 0000000..6de11c9
--- /dev/null
+++ b/test/CodeGen/X86/2009-01-16-UIntToFP.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | llc -march=x86
+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 = "i386-apple-darwin8"
+
+define hidden float @__floatundisf(i64 %u) nounwind readnone {
+entry:
+       %0 = icmp ugt i64 %u, 9007199254740991          ; <i1> [#uses=1]
+       br i1 %0, label %bb, label %bb2
+
+bb:            ; preds = %entry
+       %1 = and i64 %u, 2047           ; <i64> [#uses=1]
+       %2 = icmp eq i64 %1, 0          ; <i1> [#uses=1]
+       br i1 %2, label %bb2, label %bb1
+
+bb1:           ; preds = %bb
+       %3 = or i64 %u, 2048            ; <i64> [#uses=1]
+       %4 = and i64 %3, -2048          ; <i64> [#uses=1]
+       br label %bb2
+
+bb2:           ; preds = %bb1, %bb, %entry
+       %u_addr.0 = phi i64 [ %4, %bb1 ], [ %u, %entry ], [ %u, %bb ]           ; <i64> [#uses=2]
+       %5 = lshr i64 %u_addr.0, 32             ; <i64> [#uses=1]
+       %6 = trunc i64 %5 to i32                ; <i32> [#uses=1]
+       %7 = uitofp i32 %6 to double            ; <double> [#uses=1]
+       %8 = mul double %7, 0x41F0000000000000          ; <double> [#uses=1]
+       %9 = trunc i64 %u_addr.0 to i32         ; <i32> [#uses=1]
+       %10 = uitofp i32 %9 to double           ; <double> [#uses=1]
+       %11 = add double %10, %8                ; <double> [#uses=1]
+       %12 = fptrunc double %11 to float               ; <float> [#uses=1]
+       ret float %12
+}