forked from OSchip/llvm-project
76 lines
1.9 KiB
LLVM
76 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instsimplify -S < %s | FileCheck %s
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define i1 @test(i8 %p, i8* %pq) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: ret i1 false
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;
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%q = load i8, i8* %pq, !range !0 ; %q is known nonzero; no known bits
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%1 = or i8 %p, 2 ; %1[1] = 1
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%2 = and i8 %1, 254 ; %2[0] = 0, %2[1] = 1
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%A = lshr i8 %2, 1 ; We should know that %A is nonzero.
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%x = icmp eq i8 %A, 0
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ret i1 %x
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}
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!0 = !{ i8 1, i8 5 }
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define i32 @shl_shl(i32 %A) {
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; CHECK-LABEL: @shl_shl(
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; CHECK-NEXT: ret i32 0
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;
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%B = shl i32 %A, 6
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%C = shl i32 %B, 28
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ret i32 %C
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}
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define <2 x i33> @shl_shl_splat_vec(<2 x i33> %A) {
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; CHECK-LABEL: @shl_shl_splat_vec(
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; CHECK-NEXT: ret <2 x i33> zeroinitializer
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;
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%B = shl <2 x i33> %A, <i33 5, i33 5>
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%C = shl <2 x i33> %B, <i33 28, i33 28>
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ret <2 x i33> %C
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}
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; FIXME
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define <2 x i33> @shl_shl_vec(<2 x i33> %A) {
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; CHECK-LABEL: @shl_shl_vec(
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; CHECK-NEXT: [[B:%.*]] = shl <2 x i33> %A, <i33 6, i33 5>
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; CHECK-NEXT: [[C:%.*]] = shl <2 x i33> [[B]], <i33 27, i33 28>
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; CHECK-NEXT: ret <2 x i33> [[C]]
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;
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%B = shl <2 x i33> %A, <i33 6, i33 5>
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%C = shl <2 x i33> %B, <i33 27, i33 28>
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ret <2 x i33> %C
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}
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define i232 @lshr_lshr(i232 %A) {
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; CHECK-LABEL: @lshr_lshr(
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; CHECK-NEXT: ret i232 0
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;
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%B = lshr i232 %A, 231
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%C = lshr i232 %B, 1
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ret i232 %C
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}
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define <2 x i32> @lshr_lshr_splat_vec(<2 x i32> %A) {
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; CHECK-LABEL: @lshr_lshr_splat_vec(
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; CHECK-NEXT: ret <2 x i32> zeroinitializer
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;
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%B = lshr <2 x i32> %A, <i32 28, i32 28>
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%C = lshr <2 x i32> %B, <i32 4, i32 4>
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ret <2 x i32> %C
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}
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define <2 x i32> @lshr_lshr_vec(<2 x i32> %A) {
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; CHECK-LABEL: @lshr_lshr_vec(
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; CHECK-NEXT: ret <2 x i32> zeroinitializer
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;
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%B = lshr <2 x i32> %A, <i32 29, i32 28>
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%C = lshr <2 x i32> %B, <i32 4, i32 5>
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ret <2 x i32> %C
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}
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