| ; |
| ; Test: ExternalConstant |
| ; |
| ; Description: |
| ; This regression test helps check whether the instruction combining |
| ; optimization pass correctly handles global variables which are marked |
| ; as external and constant. |
| ; |
| ; If a problem occurs, we should die on an assert(). Otherwise, we |
| ; should pass through the optimizer without failure. |
| ; |
| ; Extra code: |
| ; RUN: opt < %s -instcombine |
| ; END. |
| |
| target datalayout = "e-p:32:32" |
| @silly = external constant i32 ; <i32*> [#uses=1] |
| |
| declare void @bzero(i8*, i32) |
| |
| declare void @bcopy(i8*, i8*, i32) |
| |
| declare i32 @bcmp(i8*, i8*, i32) |
| |
| declare i32 @fputs(i8*, i8*) |
| |
| declare i32 @fputs_unlocked(i8*, i8*) |
| |
| define i32 @function(i32 %a.1) { |
| entry: |
| %a.0 = alloca i32 ; <i32*> [#uses=2] |
| %result = alloca i32 ; <i32*> [#uses=2] |
| store i32 %a.1, i32* %a.0 |
| %tmp.0 = load i32* %a.0 ; <i32> [#uses=1] |
| %tmp.1 = load i32* @silly ; <i32> [#uses=1] |
| %tmp.2 = add i32 %tmp.0, %tmp.1 ; <i32> [#uses=1] |
| store i32 %tmp.2, i32* %result |
| br label %return |
| |
| return: ; preds = %entry |
| %tmp.3 = load i32* %result ; <i32> [#uses=1] |
| ret i32 %tmp.3 |
| } |
| |
