mirror of
https://github.com/RPCSX/llvm.git
synced 2024-11-30 23:20:54 +00:00
04be7e88ef
Check that the incoming blocks of phi nodes are identical, and block function merging if they are not. rdar://problem/26255167 Differential Revision: http://reviews.llvm.org/D20462 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270250 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1006 B
LLVM
51 lines
1006 B
LLVM
; RUN: opt -S -mergefunc < %s | FileCheck %s
|
|
|
|
; Ensure that we do not merge functions that are identical with the
|
|
; exception of the order of the incoming blocks to a phi.
|
|
|
|
; CHECK-LABEL: define linkonce_odr hidden i1 @first(i2)
|
|
define linkonce_odr hidden i1 @first(i2) {
|
|
entry:
|
|
; CHECK: switch i2
|
|
switch i2 %0, label %default [
|
|
i2 0, label %L1
|
|
i2 1, label %L2
|
|
i2 -2, label %L3
|
|
]
|
|
default:
|
|
unreachable
|
|
L1:
|
|
br label %done
|
|
L2:
|
|
br label %done
|
|
L3:
|
|
br label %done
|
|
done:
|
|
%result = phi i1 [ true, %L1 ], [ false, %L2 ], [ false, %L3 ]
|
|
; CHECK: ret i1
|
|
ret i1 %result
|
|
}
|
|
|
|
; CHECK-LABEL: define linkonce_odr hidden i1 @second(i2)
|
|
define linkonce_odr hidden i1 @second(i2) {
|
|
entry:
|
|
; CHECK: switch i2
|
|
switch i2 %0, label %default [
|
|
i2 0, label %L1
|
|
i2 1, label %L2
|
|
i2 -2, label %L3
|
|
]
|
|
default:
|
|
unreachable
|
|
L1:
|
|
br label %done
|
|
L2:
|
|
br label %done
|
|
L3:
|
|
br label %done
|
|
done:
|
|
%result = phi i1 [ true, %L3 ], [ false, %L2 ], [ false, %L1 ]
|
|
; CHECK: ret i1
|
|
ret i1 %result
|
|
}
|