cee313d288
The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
34 lines
659 B
LLVM
34 lines
659 B
LLVM
; RUN: opt < %s -S -ipsccp | FileCheck %s
|
|
; PR5596
|
|
|
|
; IPSCCP should propagate the 0 argument, eliminate the switch, and propagate
|
|
; the result.
|
|
|
|
; CHECK: define i32 @main() #0 {
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NOT: call
|
|
; CHECK-NEXT: ret i32 123
|
|
|
|
define i32 @main() noreturn nounwind {
|
|
entry:
|
|
%call2 = tail call i32 @wwrite(i64 0) nounwind
|
|
ret i32 %call2
|
|
}
|
|
|
|
define internal i32 @wwrite(i64 %i) nounwind readnone {
|
|
entry:
|
|
switch i64 %i, label %sw.default [
|
|
i64 3, label %return
|
|
i64 10, label %return
|
|
]
|
|
|
|
sw.default:
|
|
ret i32 123
|
|
|
|
return:
|
|
ret i32 0
|
|
}
|
|
|
|
; CHECK: attributes #0 = { noreturn nounwind }
|
|
; CHECK: attributes #1 = { nounwind readnone }
|