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[InstSimplify] add tests for ctlz-of-shift-constant; NFC

This commit is contained in:
Sanjay Patel 2021-04-21 14:07:34 -04:00
parent b309f17abf
commit 859e1f420d
1 changed files with 22 additions and 0 deletions
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22
llvm/test/Transforms/InstSimplify/call.ll
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@ -1406,6 +1406,17 @@ define i32 @ctlz_lshr_sign_bit(i32 %x) {
ret i32 %r
}
define i32 @ctlz_lshr_negative(i32 %x) {
; CHECK-LABEL: @ctlz_lshr_negative(
; CHECK-NEXT: [[S:%.*]] = lshr i32 -42, [[X:%.*]]
; CHECK-NEXT: [[R:%.*]] = call i32 @llvm.ctlz.i32(i32 [[S]], i1 true)
; CHECK-NEXT: ret i32 [[R]]
;
%s = lshr i32 -42, %x
%r = call i32 @llvm.ctlz.i32(i32 %s, i1 true)
ret i32 %r
}
define <3 x i33> @ctlz_lshr_sign_bit_vec(<3 x i33> %x) {
; CHECK-LABEL: @ctlz_lshr_sign_bit_vec(
; CHECK-NEXT: ret <3 x i33> [[X:%.*]]
@ -1441,6 +1452,17 @@ define i32 @ctlz_ashr_sign_bit(i32 %x) {
ret i32 %r
}
define i32 @ctlz_ashr_negative(i32 %x) {
; CHECK-LABEL: @ctlz_ashr_negative(
; CHECK-NEXT: [[S:%.*]] = ashr i32 -42, [[X:%.*]]
; CHECK-NEXT: [[R:%.*]] = call i32 @llvm.ctlz.i32(i32 [[S]], i1 false)
; CHECK-NEXT: ret i32 [[R]]
;
%s = ashr i32 -42, %x
%r = call i32 @llvm.ctlz.i32(i32 %s, i1 false)
ret i32 %r
}
define <3 x i33> @ctlz_ashr_sign_bit_vec(<3 x i33> %x) {
; CHECK-LABEL: @ctlz_ashr_sign_bit_vec(
; CHECK-NEXT: [[S:%.*]] = ashr <3 x i33> <i33 -4294967296, i33 undef, i33 -4294967296>, [[X:%.*]]