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add more tests for PR30273 

llvm-svn: 281270
This commit is contained in:
Sanjay Patel 2016-09-12 22:28:29 +00:00
parent a506d50744
commit ff00fae8e6
1 changed files with 32 additions and 2 deletions
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34
llvm/test/Transforms/InstCombine/zext-bool-add-sub.ll
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@ -18,8 +18,8 @@ define i32 @a(i1 zeroext %x, i1 zeroext %y) {
ret i32 %add
}
define i32 @PR30273(i1 %a, i1 %b) {
; CHECK-LABEL: @PR30273(
define i32 @PR30273_select(i1 %a, i1 %b) {
; CHECK-LABEL: @PR30273_select(
; CHECK-NEXT: [[ZEXT:%.*]] = zext i1 %a to i32
; CHECK-NEXT: [[SEL1:%.*]] = select i1 %a, i32 2, i32 1
; CHECK-NEXT: [[SEL2:%.*]] = select i1 %b, i32 [[SEL1]], i32 [[ZEXT]]
@ -31,3 +31,33 @@ define i32 @PR30273(i1 %a, i1 %b) {
ret i32 %sel2
}
define i32 @PR30273_zext_add(i1 %a, i1 %b) {
; CHECK-LABEL: @PR30273_zext_add(
; CHECK-NEXT: [[CONV:%.*]] = zext i1 %a to i32
; CHECK-NEXT: [[CONV3:%.*]] = zext i1 %b to i32
; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw i32 [[CONV3]], [[CONV]]
; CHECK-NEXT: ret i32 [[ADD]]
;
%conv = zext i1 %a to i32
%conv3 = zext i1 %b to i32
%add = add nuw nsw i32 %conv3, %conv
ret i32 %add
}
define i32 @PR30273_three_bools(i1 %x, i1 %y, i1 %z) {
; CHECK-LABEL: @PR30273_three_bools(
; CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 %x to i32
; CHECK-NEXT: [[ADD1:%.*]] = select i1 %x, i32 2, i32 1
; CHECK-NEXT: [[SEL1:%.*]] = select i1 %y, i32 [[ADD1]], i32 [[FROMBOOL]]
; CHECK-NEXT: [[ADD2:%.*]] = zext i1 %z to i32
; CHECK-NEXT: [[SEL2:%.*]] = add nuw nsw i32 [[SEL1]], [[ADD2]]
; CHECK-NEXT: ret i32 [[SEL2]]
;
%frombool = zext i1 %x to i32
%add1 = add nsw i32 %frombool, 1
%sel1 = select i1 %y, i32 %add1, i32 %frombool
%add2 = add nsw i32 %sel1, 1
%sel2 = select i1 %z, i32 %add2, i32 %sel1
ret i32 %sel2
}