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

[InstCombine] icmp-logical.ll: restore the original intention of the test. 

While that fold is clearly not happening [anymore],
we do now have separate test cases for these cases,
so we should be ok to slightly adjust these tests
to not potentially loose test coverage.

As suggested by Hiroshi Yamauchi in
https://reviews.llvm.org/D49179#1159345

llvm-svn: 336912
This commit is contained in:
Roman Lebedev 2018-07-12 14:56:17 +00:00
parent 74f899f0f4
commit 733a8d6886
1 changed files with 8 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
llvm/test/Transforms/InstCombine/icmp-logical.ll
View File

@ -59,15 +59,13 @@ define i1 @masked_or_allones(i32 %A) {
define i1 @masked_and_notA(i32 %A) {
; CHECK-LABEL: @masked_and_notA(
; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 [[A:%.*]], 7
; CHECK-NEXT: [[MASK2:%.*]] = and i32 [[A]], 39
; CHECK-NEXT: [[MASK2:%.*]] = and i32 [[A:%.*]], 78
; CHECK-NEXT: [[TST2:%.*]] = icmp ne i32 [[MASK2]], [[A]]
; CHECK-NEXT: [[RES:%.*]] = and i1 [[TMP1]], [[TST2]]
; CHECK-NEXT: ret i1 [[RES]]
; CHECK-NEXT: ret i1 [[TST2]]
;
%mask1 = and i32 %A, 7
%mask1 = and i32 %A, 14
%tst1 = icmp ne i32 %mask1, %A
%mask2 = and i32 %A, 39
%mask2 = and i32 %A, 78
%tst2 = icmp ne i32 %mask2, %A
%res = and i1 %tst1, %tst2
ret i1 %res
@ -90,15 +88,13 @@ define i1 @masked_and_notA_slightly_optimized(i32 %A) {
define i1 @masked_or_A(i32 %A) {
; CHECK-LABEL: @masked_or_A(
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A:%.*]], 8
; CHECK-NEXT: [[MASK2:%.*]] = and i32 [[A]], 39
; CHECK-NEXT: [[MASK2:%.*]] = and i32 [[A:%.*]], 78
; CHECK-NEXT: [[TST2:%.*]] = icmp eq i32 [[MASK2]], [[A]]
; CHECK-NEXT: [[RES:%.*]] = or i1 [[TMP1]], [[TST2]]
; CHECK-NEXT: ret i1 [[RES]]
; CHECK-NEXT: ret i1 [[TST2]]
;
%mask1 = and i32 %A, 7
%mask1 = and i32 %A, 14
%tst1 = icmp eq i32 %mask1, %A
%mask2 = and i32 %A, 39
%mask2 = and i32 %A, 78
%tst2 = icmp eq i32 %mask2, %A
%res = or i1 %tst1, %tst2
ret i1 %res