mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 11:42:57 +01:00
28 lines
1.1 KiB
LLVM
28 lines
1.1 KiB
LLVM
; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | \
|
|
; RUN: not grep select
|
|
|
|
;; The PHI node in this example should not be turned into a select, as we are
|
|
;; not able to ifcvt the entire block. As such, converting to a select just
|
|
;; introduces inefficiency without saving copies.
|
|
|
|
define i32 @bar(i1 %C) {
|
|
entry:
|
|
br i1 %C, label %then, label %endif
|
|
then: ; preds = %entry
|
|
%tmp.3 = call i32 @qux( ) ; <i32> [#uses=0]
|
|
br label %endif
|
|
endif: ; preds = %then, %entry
|
|
%R = phi i32 [ 123, %entry ], [ 12312, %then ] ; <i32> [#uses=1]
|
|
;; stuff to disable tail duplication
|
|
call i32 @qux( ) ; <i32>:0 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:1 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:2 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:3 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:4 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:5 [#uses=0]
|
|
call i32 @qux( ) ; <i32>:6 [#uses=0]
|
|
ret i32 %R
|
|
}
|
|
|
|
declare i32 @qux()
|