mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-19 11:02:59 +02:00
124 lines
2.1 KiB
LLVM
124 lines
2.1 KiB
LLVM
; RUN: opt %s -S -simplifycfg | FileCheck %s
|
|
|
|
; cmp1 implies cmp2 is false
|
|
; CHECK-LABEL: @test1
|
|
; CHECK-NOT: call void @is(i1 true)
|
|
; CHECK: call void @is(i1 false)
|
|
define void @test1(i32 %a) {
|
|
%cmp1 = icmp eq i32 %a, 0
|
|
br i1 %cmp1, label %taken, label %untaken
|
|
|
|
taken:
|
|
%cmp2 = icmp eq i32 %a, 1
|
|
br i1 %cmp2, label %istrue, label %isfalse
|
|
|
|
istrue:
|
|
call void @is(i1 true)
|
|
ret void
|
|
|
|
isfalse:
|
|
call void @is(i1 false)
|
|
ret void
|
|
|
|
untaken:
|
|
ret void
|
|
}
|
|
|
|
; cmp1 implies cmp2 is false
|
|
; CHECK-LABEL: @test2
|
|
; CHECK-NOT: call void @is(i1 true)
|
|
; CHECK: call void @is(i1 false)
|
|
define void @test2(i32 %a) {
|
|
%cmp1 = icmp ugt i32 %a, 5
|
|
br i1 %cmp1, label %untaken, label %taken
|
|
|
|
taken:
|
|
%cmp2 = icmp ugt i32 %a, 6
|
|
br i1 %cmp2, label %istrue, label %isfalse
|
|
|
|
istrue:
|
|
call void @is(i1 true)
|
|
ret void
|
|
|
|
isfalse:
|
|
call void @is(i1 false)
|
|
ret void
|
|
|
|
untaken:
|
|
ret void
|
|
}
|
|
|
|
; cmp1 implies cmp2 is false
|
|
; CHECK-LABEL: @test3
|
|
; CHECK-NOT: call void @is(i1 true)
|
|
; CHECK: call void @is(i1 false)
|
|
define void @test3(i32 %a) {
|
|
%cmp1 = icmp ugt i32 %a, 1
|
|
br i1 %cmp1, label %taken, label %untaken
|
|
|
|
taken:
|
|
%cmp2 = icmp eq i32 %a, 0
|
|
br i1 %cmp2, label %istrue, label %isfalse
|
|
|
|
istrue:
|
|
call void @is(i1 true)
|
|
ret void
|
|
|
|
isfalse:
|
|
call void @is(i1 false)
|
|
ret void
|
|
|
|
untaken:
|
|
ret void
|
|
}
|
|
|
|
; cmp1 implies cmp2 is true
|
|
; CHECK-LABEL: @test4
|
|
; CHECK: call void @is(i1 true)
|
|
; CHECK-NOT: call void @is(i1 false)
|
|
define void @test4(i32 %a) {
|
|
%cmp1 = icmp sgt i32 %a, 1
|
|
br i1 %cmp1, label %taken, label %untaken
|
|
|
|
taken:
|
|
%cmp2 = icmp ugt i32 %a, 0
|
|
br i1 %cmp2, label %istrue, label %isfalse
|
|
|
|
istrue:
|
|
call void @is(i1 true)
|
|
ret void
|
|
|
|
isfalse:
|
|
call void @is(i1 false)
|
|
ret void
|
|
|
|
untaken:
|
|
ret void
|
|
}
|
|
|
|
; cmp1 implies cmp2 is true
|
|
; CHECK-LABEL: @test5
|
|
; CHECK: call void @is(i1 true)
|
|
; CHECK-NOT: call void @is(i1 false)
|
|
define void @test5(i32 %a) {
|
|
%cmp1 = icmp sgt i32 %a, 5
|
|
br i1 %cmp1, label %taken, label %untaken
|
|
|
|
taken:
|
|
%cmp2 = icmp sgt i32 %a, -1
|
|
br i1 %cmp2, label %istrue, label %isfalse
|
|
|
|
istrue:
|
|
call void @is(i1 true)
|
|
ret void
|
|
|
|
isfalse:
|
|
call void @is(i1 false)
|
|
ret void
|
|
|
|
untaken:
|
|
ret void
|
|
}
|
|
|
|
declare void @is(i1)
|