| ; This test checks to see if scalarrepl also works when a gep with all zeroes is |
| ; used instead of a bitcast to prepare a memmove pointer argument. Previously, |
| ; this would not work when there was a vector involved in the struct, preventing |
| ; scalarrepl from removing the alloca below. |
| |
| ; RUN: opt < %s -scalarrepl -S > %t |
| ; RUN: cat %t | not grep alloca |
| target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64" |
| |
| %struct.two = type <{ < 2 x i8 >, i16 }> |
| |
| define void @main(%struct.two* %D, i16 %V) { |
| entry: |
| %S = alloca %struct.two |
| %S.2 = getelementptr %struct.two* %S, i32 0, i32 1 |
| store i16 %V, i16* %S.2 |
| ; This gep is effectively a bitcast to i8*, but is sometimes generated |
| ; because the type of the first element in %struct.two is i8. |
| %tmpS = getelementptr %struct.two* %S, i32 0, i32 0, i32 0 |
| %tmpD = bitcast %struct.two* %D to i8* |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %tmpD, i8* %tmpS, i32 4, i32 1, i1 false) |
| ret void |
| } |
| |
| declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind |
