| ; This test shows an alloca of a struct and an array that can be reduced to |
| ; multiple variables easily. However, the alloca is used by a store |
| ; instruction, which was not possible before aggregrates were first class |
| ; values. This checks of scalarrepl splits up the struct and array properly. |
| |
| ; RUN: opt < %s -scalarrepl -S | 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" |
| |
| define i32 @foo() { |
| %target = alloca { i32, i32 } ; <{ i32, i32 }*> [#uses=1] |
| ; Build a first class struct to store |
| %res1 = insertvalue { i32, i32 } undef, i32 1, 0 ; <{ i32, i32 }> [#uses=1] |
| %res2 = insertvalue { i32, i32 } %res1, i32 2, 1 ; <{ i32, i32 }> [#uses=1] |
| ; And store it |
| store { i32, i32 } %res2, { i32, i32 }* %target |
| ; Actually use %target, so it doesn't get removed alltogether |
| %ptr = getelementptr { i32, i32 }* %target, i32 0, i32 0 |
| %val = load i32* %ptr |
| ret i32 %val |
| } |
| |
| define i32 @bar() { |
| %target = alloca [ 2 x i32 ] ; <{ i32, i32 }*> [#uses=1] |
| ; Build a first class array to store |
| %res1 = insertvalue [ 2 x i32 ] undef, i32 1, 0 ; <{ i32, i32 }> [#uses=1] |
| %res2 = insertvalue [ 2 x i32 ] %res1, i32 2, 1 ; <{ i32, i32 }> [#uses=1] |
| ; And store it |
| store [ 2 x i32 ] %res2, [ 2 x i32 ]* %target |
| ; Actually use %target, so it doesn't get removed alltogether |
| %ptr = getelementptr [ 2 x i32 ]* %target, i32 0, i32 0 |
| %val = load i32* %ptr |
| ret i32 %val |
| } |
