| Dan Gohman | e106aee | 2011-07-21 23:30:09 +0000 | [diff] [blame^] | 1 | ; RUN: opt -scalarrepl -S < %s | FileCheck %s |
| 2 | ; rdar://9786827 |
| 3 | |
| 4 | ; SROA should be able to handle the mixed types and eliminate the allocas here. |
| 5 | |
| 6 | ; TODO: Currently it does this by falling back to integer "bags of bits". |
| 7 | ; With enough cleverness, it should be possible to convert between <3 x i32> |
| 8 | ; and <2 x i64> by using a combination of a bitcast and a shuffle. |
| 9 | |
| 10 | ; CHECK: { |
| 11 | ; CHECK-NOT: alloca |
| 12 | ; CHECK: } |
| 13 | |
| 14 | 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-n8:16:32" |
| 15 | target triple = "i386-apple-darwin11.0.0" |
| 16 | |
| 17 | define <2 x i64> @foo() nounwind { |
| 18 | entry: |
| 19 | %retval = alloca <3 x i32>, align 16 |
| 20 | %z = alloca <4 x i32>, align 16 |
| 21 | %tmp = load <4 x i32>* %z |
| 22 | %tmp1 = shufflevector <4 x i32> %tmp, <4 x i32> undef, <3 x i32> <i32 0, i32 1, i32 2> |
| 23 | store <3 x i32> %tmp1, <3 x i32>* %retval |
| 24 | %0 = bitcast <3 x i32>* %retval to <2 x i64>* |
| 25 | %1 = load <2 x i64>* %0, align 1 |
| 26 | ret <2 x i64> %1 |
| 27 | } |