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[InstSimplify] add/move tests for (icmp X, C1 & icmp X, C2); NFC

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We simplify based on range intersection, but we're missing folds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300493 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2017-04-17 20:38:33 +00:00
parent 9fc2ff7f34
commit 4aa15d3d33
2 changed files with 2912 additions and 20 deletions
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20
test/Transforms/InstSimplify/AndOrXor.ll
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@ -376,26 +376,6 @@ define i1 @or_icmp3(i32 %x, i32 %y) {
ret i1 %3
}
define i1 @disjoint_cmps(i32 %A) {
; CHECK-LABEL: @disjoint_cmps(
; CHECK-NEXT: ret i1 false
;
%B = icmp eq i32 %A, 1
%C = icmp sge i32 %A, 3
%D = and i1 %B, %C
ret i1 %D
}
define i1 @disjoint_cmps2(i32 %X) {
; CHECK-LABEL: @disjoint_cmps2(
; CHECK-NEXT: ret i1 false
;
%a = icmp ult i32 %X, 31
%b = icmp slt i32 %X, 0
%c = and i1 %a, %b
ret i1 %c
}
; PR27869 - Look through casts to eliminate cmps and bitwise logic.
define i32 @and_of_zexted_icmps(i32 %i) {

2912
test/Transforms/InstSimplify/icmp-ranges.ll Normal file
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