mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
1de43ede89
another mechanical change accomplished though the power of terrible Perl scripts. I have manually switched some "s to 's to make escaping simpler. While I started this to fix tests that aren't run in all configurations, the massive number of tests is due to a really frustrating fragility of our testing infrastructure: things like 'grep -v', 'not grep', and 'expected failures' can mask broken tests all too easily. Essentially, I'm deeply disturbed that I can change the testsuite so radically without causing any change in results for most platforms. =/ git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159547 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
|
|
}
|
|
|