llvm-6502/test/Transforms/IPConstantProp/user-with-multiple-uses.ll
Bill Wendling 351b7a10e2 Use references to attribute groups on the call/invoke instructions.
Listing all of the attributes for the callee of a call/invoke instruction is way
too much and makes the IR unreadable. Use references to attributes instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175877 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-22 09:09:42 +00:00

35 lines
752 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-NEXT: %call2 = tail call i32 @wwrite(i64 0) [[NUW:#[0-9]+]]
; 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 }
; CHECK: attributes [[NUW]] = { nounwind }