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add missing test for simplifySelectBitTest() 

llvm-svn: 275990
This commit is contained in:
Sanjay Patel 2016-07-19 16:49:55 +00:00
parent 1c38262279
commit d2ff6d727f
1 changed files with 14 additions and 0 deletions
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14
llvm/test/Transforms/InstSimplify/select.ll
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@ -131,6 +131,20 @@ define i32 @select_icmp_and_8_eq_0_or_8(i32 %x) {
ret i32 %or.x
}
; PR28466: https://llvm.org/bugs/show_bug.cgi?id=28466
; InstSimplify needs to recognize variations of this pattern.
define i32 @select_icmp_and_8_ne_0_or_128(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_ne_0_or_128(
; CHECK-NEXT: ret i32 %x
;
%and = and i32 %x, 128
%cmp = icmp eq i32 %and, 0
%or = or i32 %x, 128
%or.x = select i1 %cmp, i32 %x, i32 %or
ret i32 %or.x
}
define i32 @select_icmp_and_8_ne_0_and_not_8(i32 %x) {
; CHECK-LABEL: @select_icmp_and_8_ne_0_and_not_8(
; CHECK-NEXT: [[AND1:%.*]] = and i32 %x, -9