71 lines
1.3 KiB
LLVM
71 lines
1.3 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
||
|
|
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v1 -S < %s | FileCheck %s
|
||
|
|
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v2 -S < %s | FileCheck %s
|
||
|
|
; RUN: opt -tut-simplifycfg -tut-simplifycfg-version=v3 -S < %s | FileCheck %s
|
||
|
|
|
||
|
|
define i32 @phi_cond_branch_eliminated() {
|
||
|
|
; CHECK-LABEL: @phi_cond_branch_eliminated(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: ret i32 20
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
br i1 true, label %bb.2, label %bb.3
|
||
|
|
|
||
|
|
bb.2:
|
||
|
|
br label %bb.3
|
||
|
|
|
||
|
|
bb.3:
|
||
|
|
%ret = phi i32 [ 10, %entry ], [ 20, %bb.2 ]
|
||
|
|
ret i32 %ret
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @phi_removed() {
|
||
|
|
; CHECK-LABEL: @phi_removed(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: br label [[BB_3:%.*]]
|
||
|
|
; CHECK: bb.3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
br i1 false, label %bb.2, label %bb.3
|
||
|
|
|
||
|
|
bb.2:
|
||
|
|
%pv = phi i32 [ 10, %entry ]
|
||
|
|
br label %bb.3
|
||
|
|
|
||
|
|
bb.3:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @phi_in_dead_region() {
|
||
|
|
; CHECK-LABEL: @phi_in_dead_region(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: ret i32 1
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
ret i32 1
|
||
|
|
|
||
|
|
bb.1:
|
||
|
|
br i1 true, label %bb.2, label %bb.3
|
||
|
|
|
||
|
|
bb.2:
|
||
|
|
br label %bb.3
|
||
|
|
|
||
|
|
bb.3:
|
||
|
|
%ret = phi i32 [ 10, %bb.1 ], [ 20, %bb.2 ]
|
||
|
|
ret i32 %ret
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @phi_in_mergable_blocks() {
|
||
|
|
; CHECK-LABEL: @phi_in_mergable_blocks(
|
||
|
|
; CHECK-NEXT: entry:
|
||
|
|
; CHECK-NEXT: ret i32 10
|
||
|
|
;
|
||
|
|
entry:
|
||
|
|
br label %bb.1
|
||
|
|
|
||
|
|
bb.1:
|
||
|
|
%pv = phi i32 [ 10, %entry ]
|
||
|
|
ret i32 %pv
|
||
|
|
}
|