Add testcase for PR9190.

llvm-svn: 125630

1 files changed, 35 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/legalize-sub-zero.ll b/llvm/test/CodeGen/X86/legalize-sub-zero.ll
new file mode 100644
index 00000000000..ee76d468e81
--- /dev/null
+++ b/llvm/test/CodeGen/X86/legalize-sub-zero.ll
@@ -0,0 +1,35 @@
+; RUN: llc < %s -mtriple=i686-pc-win32
+
+;target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f80:128:128-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32"
+;target triple = "i686-pc-win32"
+
+define void @test() nounwind {
+  %1 = fdiv <3 x double> zeroinitializer, undef
+  %2 = fdiv <2 x double> zeroinitializer, undef
+  %3 = shufflevector <2 x double> %2, <2 x double> undef, <3 x i32> <i32 0, i32
+1, i32 undef>
+  %4 = insertelement <3 x double> %3, double undef, i32 2
+  %5 = bitcast <3 x double> %1 to <3 x i64>
+  %6 = bitcast <3 x double> %4 to <3 x i64>
+  %7 = sub <3 x i64> %5, %6
+  %8 = shufflevector <3 x i64> %7, <3 x i64> undef, <2 x i32> <i32 0, i32 1>
+  %9 = xor <2 x i64> %8, zeroinitializer
+  %10 = add nsw <2 x i64> %9, zeroinitializer
+  %11 = shufflevector <2 x i64> %10, <2 x i64> undef, <3 x i32> <i32 0, i32 1,
+i32 undef>
+  %12 = insertelement <3 x i64> %11, i64 0, i32 2
+  %13 = shufflevector <3 x i64> %12, <3 x i64> undef, <4 x i32> <i32 0, i32 1,
+i32 2, i32 3>
+  %14 = shufflevector <4 x i64> %13, <4 x i64> undef, <2 x i32> <i32 0, i32 1>
+  %15 = bitcast <2 x i64> %14 to <4 x i32>
+  %16 = shufflevector <4 x i32> %15, <4 x i32> undef, <4 x i32> <i32 0, i32 2,
+i32 0, i32 2>
+  %17 = bitcast <4 x i32> %16 to <2 x i64>
+  %18 = shufflevector <2 x i64> %17, <2 x i64> undef, <2 x i32> <i32 0, i32 2>
+  %19 = bitcast <2 x i64> %18 to <4 x i32>
+  %20 = shufflevector <4 x i32> %19, <4 x i32> undef, <3 x i32> <i32 0, i32 1,
+i32 2>
+  %21 = or <3 x i32> %20, zeroinitializer
+  store <3 x i32> %21, <3 x i32> addrspace(1)* undef, align 16
+  ret void
+}