maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[JumpThreading] Add a test for simplification of cast of any op; NFC

This commit is contained in:
Juneyoung Lee 2020-08-04 18:15:00 +09:00
parent daa1c6d9d1
commit e218da7ff3
1 changed files with 101 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
llvm/test/Transforms/JumpThreading/threadable-edge-cast.ll Normal file
View File

@ -0,0 +1,101 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -jump-threading -S < %s | FileCheck %s
declare i32 @f1()
declare i32 @f2()
declare void @f3()
; trunc(and) should be simplified
define i32 @test(i1 %cond0) {
; CHECK-LABEL: @test(
; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
; CHECK: T1:
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: F1:
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
; CHECK-NEXT: br label [[MERGE]]
; CHECK: Merge:
; CHECK-NEXT: [[A:%.*]] = phi i32 [ 10, [[T1]] ], [ 0, [[F1]] ]
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
; CHECK-NEXT: [[AND:%.*]] = and i32 [[A]], 1
; CHECK-NEXT: [[COND:%.*]] = trunc i32 [[AND]] to i1
; CHECK-NEXT: br i1 [[COND]], label [[T2:%.*]], label [[F2:%.*]]
; CHECK: T2:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: ret i32 [[B]]
; CHECK: F2:
; CHECK-NEXT: ret i32 [[B]]
;
br i1 %cond0, label %T1, label %F1
T1:
%v1 = call i32 @f1()
br label %Merge
F1:
%v2 = call i32 @f2()
br label %Merge
Merge:
%A = phi i32 [10, %T1], [0, %F1]
%B = phi i32 [%v1, %T1], [%v2, %F1]
%And = and i32 %A, 1
%cond = trunc i32 %And to i1
br i1 %cond, label %T2, label %F2
T2:
call void @f3()
ret i32 %B
F2:
ret i32 %B
}
; trunc(select) should be simplified
define i32 @test2(i1 %cond0) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
; CHECK: T1:
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: F1:
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
; CHECK-NEXT: br label [[MERGE]]
; CHECK: Merge:
; CHECK-NEXT: [[A:%.*]] = phi i1 [ true, [[T1]] ], [ false, [[F1]] ]
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
; CHECK-NEXT: [[A2:%.*]] = xor i1 [[A]], true
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[A2]], i32 10, i32 0
; CHECK-NEXT: [[COND:%.*]] = trunc i32 [[SEL]] to i1
; CHECK-NEXT: br i1 [[COND]], label [[T2:%.*]], label [[F2:%.*]]
; CHECK: T2:
; CHECK-NEXT: call void @f3()
; CHECK-NEXT: ret i32 [[B]]
; CHECK: F2:
; CHECK-NEXT: ret i32 [[B]]
;
br i1 %cond0, label %T1, label %F1
T1:
%v1 = call i32 @f1()
br label %Merge
F1:
%v2 = call i32 @f2()
br label %Merge
Merge:
%A = phi i1 [1, %T1], [0, %F1]
%B = phi i32 [%v1, %T1], [%v2, %F1]
%A2 = xor i1 %A, 1
%sel = select i1 %A2, i32 10, i32 0
%cond = trunc i32 %sel to i1
br i1 %cond, label %T2, label %F2
T2:
call void @f3()
ret i32 %B
F2:
ret i32 %B
}