[Reassociate] Add initial support for vector instructions.

[oota-llvm.git] / test / Transforms / InstCombine / bitcast-store.ll

diff --git a/test/Transforms/InstCombine/bitcast-store.ll b/test/Transforms/InstCombine/bitcast-store.ll
index e4a61e98e4f50209ba56cc19331c0b48f8a6a60a..ea4d680ade5ae0a949c70be73400f63db19001be 100644 (file)
--- a/test/Transforms/InstCombine/bitcast-store.ll
+++ b/test/Transforms/InstCombine/bitcast-store.ll
@@ -3,19 +3,33 @@
 ; Instcombine should preserve metadata and alignment while
 ; folding a bitcast into a store.
 
-; CHECK: store i32 (...)** bitcast (i8** getelementptr inbounds ([5 x i8*]* @G, i64 0, i64 2) to i32 (...)**), i32 (...)*** %0, align 16, !tag !0
-
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 
 %struct.A = type { i32 (...)** }
 
 @G = external constant [5 x i8*]
 
-define void @foo(%struct.A* %a) nounwind {
+; CHECK-LABEL: @foo
+; CHECK: store i32 %x, i32* %{{.*}}, align 16, !noalias !0
+define void @foo(i32 %x, float* %p) nounwind {
+entry:
+  %x.cast = bitcast i32 %x to float
+  store float %x.cast, float* %p, align 16, !noalias !0
+  ret void
+}
+
+; Check instcombine doesn't try and fold the following bitcast into the store.
+; This transformation would not be safe since we would need to use addrspacecast
+; and addrspacecast is not guaranteed to be a no-op cast.
+
+; CHECK-LABEL: @bar
+; CHECK: %cast = bitcast i8** %b to i8 addrspace(1)**
+; CHECK: store i8 addrspace(1)* %a, i8 addrspace(1)** %cast
+define void @bar(i8 addrspace(1)* %a, i8** %b) nounwind {
 entry:
-  %0 = bitcast %struct.A* %a to i8***
-  store i8** getelementptr inbounds ([5 x i8*]* @G, i64 0, i64 2), i8*** %0, align 16, !tag !0
+  %cast = bitcast i8** %b to i8 addrspace(1)**
+  store i8 addrspace(1)* %a, i8 addrspace(1)** %cast
   ret void
 }
 
-!0 = metadata !{metadata !"hello"}
+!0 = !{!0}