53 lines
1.3 KiB
LLVM
53 lines
1.3 KiB
LLVM
; RUN: opt -S <%s -simplifycfg | FileCheck %s
|
|
|
|
define void @test_br(i32 %x) {
|
|
entry:
|
|
; CHECK: @test_br
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: ret void
|
|
%cmp = icmp eq i32 %x, 10
|
|
br i1 %cmp, label %if.then, label %if.then
|
|
|
|
if.then: ; preds = %entry
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.else, %if.then
|
|
ret void
|
|
}
|
|
|
|
define void @test_switch(i32 %x) nounwind {
|
|
entry:
|
|
; CHECK: @test_switch
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: ret void
|
|
%rem = srem i32 %x, 3
|
|
switch i32 %rem, label %sw.bb [
|
|
i32 1, label %sw.bb
|
|
i32 10, label %sw.bb
|
|
]
|
|
|
|
sw.bb: ; preds = %sw.default, %entry, %entry
|
|
br label %sw.epilog
|
|
|
|
sw.epilog: ; preds = %sw.bb
|
|
ret void
|
|
}
|
|
|
|
define void @test_indirectbr(i32 %x) {
|
|
entry:
|
|
; CHECK: @test_indirectbr
|
|
; CHECK-NEXT: entry:
|
|
; Ideally this should now check:
|
|
; CHK-NEXT: ret void
|
|
; But that doesn't happen yet. Instead:
|
|
; CHECK-NEXT: br label %L1
|
|
|
|
%label = bitcast i8* blockaddress(@test_indirectbr, %L1) to i8*
|
|
indirectbr i8* %label, [label %L1, label %L2]
|
|
|
|
L1: ; preds = %entry
|
|
ret void
|
|
L2: ; preds = %entry
|
|
ret void
|
|
}
|