mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-27 13:29:50 +00:00
f2f6ce65b7
input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
80 lines
2.2 KiB
LLVM
80 lines
2.2 KiB
LLVM
; RUN: opt < %s -simplifycfg -S | \
|
|
; RUN: not grep {call void @DEAD}
|
|
|
|
; Test that we can thread a simple known condition through switch statements.
|
|
|
|
declare void @foo1()
|
|
|
|
declare void @foo2()
|
|
|
|
declare void @DEAD()
|
|
|
|
define void @test1(i32 %V) {
|
|
switch i32 %V, label %A [
|
|
i32 4, label %T
|
|
i32 17, label %Done
|
|
i32 1234, label %A
|
|
]
|
|
;; V == 4 if we get here.
|
|
T: ; preds = %0
|
|
call void @foo1( )
|
|
;; This switch is always statically determined.
|
|
switch i32 %V, label %A2 [
|
|
i32 4, label %B
|
|
i32 17, label %C
|
|
i32 42, label %C
|
|
]
|
|
A2: ; preds = %T
|
|
call void @DEAD( )
|
|
call void @DEAD( )
|
|
;; always true
|
|
%cond2 = icmp eq i32 %V, 4 ; <i1> [#uses=1]
|
|
br i1 %cond2, label %Done, label %C
|
|
A: ; preds = %0, %0
|
|
call void @foo1( )
|
|
;; always true
|
|
%cond = icmp ne i32 %V, 4 ; <i1> [#uses=1]
|
|
br i1 %cond, label %Done, label %C
|
|
Done: ; preds = %B, %A, %A2, %0
|
|
ret void
|
|
B: ; preds = %T
|
|
call void @foo2( )
|
|
;; always true
|
|
%cond3 = icmp eq i32 %V, 4 ; <i1> [#uses=1]
|
|
br i1 %cond3, label %Done, label %C
|
|
C: ; preds = %B, %A, %A2, %T, %T
|
|
call void @DEAD( )
|
|
ret void
|
|
}
|
|
|
|
define void @test2(i32 %V) {
|
|
switch i32 %V, label %A [
|
|
i32 4, label %T
|
|
i32 17, label %D
|
|
i32 1234, label %E
|
|
]
|
|
;; V != 4, 17, 1234 here.
|
|
A: ; preds = %0
|
|
call void @foo1( )
|
|
;; This switch is always statically determined.
|
|
switch i32 %V, label %E [
|
|
i32 4, label %C
|
|
i32 17, label %C
|
|
i32 42, label %D
|
|
]
|
|
;; unreacahble.
|
|
C: ; preds = %A, %A
|
|
call void @DEAD( )
|
|
ret void
|
|
T: ; preds = %0
|
|
call void @foo1( )
|
|
call void @foo1( )
|
|
ret void
|
|
D: ; preds = %A, %0
|
|
call void @foo1( )
|
|
ret void
|
|
E: ; preds = %A, %0
|
|
ret void
|
|
}
|
|
|