diff options
Diffstat (limited to 'test/Transforms/InstSimplify/compare.ll')
| -rw-r--r-- | test/Transforms/InstSimplify/compare.ll | 191 |
1 files changed, 189 insertions, 2 deletions
diff --git a/test/Transforms/InstSimplify/compare.ll b/test/Transforms/InstSimplify/compare.ll index 7d0cd9c..38fd747 100644 --- a/test/Transforms/InstSimplify/compare.ll +++ b/test/Transforms/InstSimplify/compare.ll @@ -333,14 +333,46 @@ define i1 @or(i32 %x) { ; CHECK: ret i1 false } -define i1 @shl(i32 %x) { -; CHECK-LABEL: @shl( +define i1 @shl1(i32 %x) { +; CHECK-LABEL: @shl1( %s = shl i32 1, %x %c = icmp eq i32 %s, 0 ret i1 %c ; CHECK: ret i1 false } +define i1 @shl2(i32 %X) { +; CHECK: @shl2 + %sub = shl nsw i32 -1, %X + %cmp = icmp eq i32 %sub, 31 + ret i1 %cmp +; CHECK-NEXT: ret i1 false +} + +define i1 @shl3(i32 %X) { +; CHECK: @shl3 + %sub = shl nuw i32 4, %X + %cmp = icmp eq i32 %sub, 31 + ret i1 %cmp +; CHECK-NEXT: ret i1 false +} + +define i1 @shl4(i32 %X) { +; CHECK: @shl4 + %sub = shl nsw i32 -1, %X + %cmp = icmp sle i32 %sub, -1 + ret i1 %cmp +; CHECK-NEXT: ret i1 true +} + +define i1 @shl5(i32 %X) { +; CHECK: @shl5 + %sub = shl nuw i32 4, %X + %cmp = icmp ugt i32 %sub, 3 + ret i1 %cmp +; CHECK-NEXT: ret i1 true +} + define i1 @lshr1(i32 %x) { ; CHECK-LABEL: @lshr1( %s = lshr i32 -1, %x @@ -874,6 +906,21 @@ define i1 @nonnull_arg(i32* nonnull %i) { ; CHECK: ret i1 false } +define i1 @nonnull_deref_arg(i32* dereferenceable(4) %i) { + %cmp = icmp eq i32* %i, null + ret i1 %cmp +; CHECK-LABEL: @nonnull_deref_arg +; CHECK: ret i1 false +} + +define i1 @nonnull_deref_as_arg(i32 addrspace(1)* dereferenceable(4) %i) { + %cmp = icmp eq i32 addrspace(1)* %i, null + ret i1 %cmp +; CHECK-LABEL: @nonnull_deref_as_arg +; CHECK: icmp +; CHECK ret +} + declare nonnull i32* @returns_nonnull_helper() define i1 @returns_nonnull() { %call = call nonnull i32* @returns_nonnull_helper() @@ -883,6 +930,48 @@ define i1 @returns_nonnull() { ; CHECK: ret i1 false } +declare dereferenceable(4) i32* @returns_nonnull_deref_helper() +define i1 @returns_nonnull_deref() { + %call = call dereferenceable(4) i32* @returns_nonnull_deref_helper() + %cmp = icmp eq i32* %call, null + ret i1 %cmp +; CHECK-LABEL: @returns_nonnull_deref +; CHECK: ret i1 false +} + +declare dereferenceable(4) i32 addrspace(1)* @returns_nonnull_deref_as_helper() +define i1 @returns_nonnull_as_deref() { + %call = call dereferenceable(4) i32 addrspace(1)* @returns_nonnull_deref_as_helper() + %cmp = icmp eq i32 addrspace(1)* %call, null + ret i1 %cmp +; CHECK-LABEL: @returns_nonnull_as_deref +; CHECK: icmp +; CHECK: ret +} + +define i1 @nonnull_load(i32** %addr) { + %ptr = load i32** %addr, !nonnull !{} + %cmp = icmp eq i32* %ptr, null + ret i1 %cmp +; CHECK-LABEL: @nonnull_load +; CHECK: ret i1 false +} + +define i1 @nonnull_load_as_outer(i32* addrspace(1)* %addr) { + %ptr = load i32* addrspace(1)* %addr, !nonnull !{} + %cmp = icmp eq i32* %ptr, null + ret i1 %cmp +; CHECK-LABEL: @nonnull_load_as_outer +; CHECK: ret i1 false +} +define i1 @nonnull_load_as_inner(i32 addrspace(1)** %addr) { + %ptr = load i32 addrspace(1)** %addr, !nonnull !{} + %cmp = icmp eq i32 addrspace(1)* %ptr, null + ret i1 %cmp +; CHECK-LABEL: @nonnull_load_as_inner +; CHECK: ret i1 false +} + ; If a bit is known to be zero for A and known to be one for B, ; then A and B cannot be equal. define i1 @icmp_eq_const(i32 %a) nounwind { @@ -913,3 +1002,101 @@ define i1 @icmp_sdiv_int_min(i32 %a) { ; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[DIV]], -1073741824 ; CHECK-NEXT: ret i1 [[CMP]] } + +define i1 @icmp_sdiv_pr20288(i64 %a) { + %div = sdiv i64 %a, -8589934592 + %cmp = icmp ne i64 %div, 1073741824 + ret i1 %cmp + +; CHECK-LABEL: @icmp_sdiv_pr20288 +; CHECK-NEXT: [[DIV:%.*]] = sdiv i64 %a, -8589934592 +; CHECK-NEXT: [[CMP:%.*]] = icmp ne i64 [[DIV]], 1073741824 +; CHECK-NEXT: ret i1 [[CMP]] +} + +define i1 @icmp_sdiv_neg1(i64 %a) { + %div = sdiv i64 %a, -1 + %cmp = icmp ne i64 %div, 1073741824 + ret i1 %cmp + +; CHECK-LABEL: @icmp_sdiv_neg1 +; CHECK-NEXT: [[DIV:%.*]] = sdiv i64 %a, -1 +; CHECK-NEXT: [[CMP:%.*]] = icmp ne i64 [[DIV]], 1073741824 +; CHECK-NEXT: ret i1 [[CMP]] +} + +define i1 @icmp_known_bits(i4 %x, i4 %y) { + %and1 = and i4 %y, -7 + %and2 = and i4 %x, -7 + %or1 = or i4 %and1, 2 + %or2 = or i4 %and2, 2 + %add = add i4 %or1, %or2 + %cmp = icmp eq i4 %add, 0 + ret i1 %cmp + +; CHECK-LABEL: @icmp_known_bits +; CHECK-NEXT: ret i1 false +} + +define i1 @icmp_shl_nuw_1(i64 %a) { + %shl = shl nuw i64 1, %a + %cmp = icmp ne i64 %shl, 0 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_nuw_1 +; CHECK-NEXT: ret i1 true +} + +define i1 @icmp_shl_nsw_neg1(i64 %a) { + %shl = shl nsw i64 -1, %a + %cmp = icmp sge i64 %shl, 3 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_nsw_neg1 +; CHECK-NEXT: ret i1 false +} + +define i1 @icmp_shl_nsw_1(i64 %a) { + %shl = shl nsw i64 1, %a + %cmp = icmp sge i64 %shl, 0 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_nsw_1 +; CHECK-NEXT: ret i1 true +} + +define i1 @icmp_shl_1_V_ugt_2147483648(i32 %V) { + %shl = shl i32 1, %V + %cmp = icmp ugt i32 %shl, 2147483648 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_1_V_ugt_2147483648( +; CHECK-NEXT: ret i1 false +} + +define i1 @icmp_shl_1_V_ule_2147483648(i32 %V) { + %shl = shl i32 1, %V + %cmp = icmp ule i32 %shl, 2147483648 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_1_V_ule_2147483648( +; CHECK-NEXT: ret i1 true +} + +define i1 @icmp_shl_1_V_eq_31(i32 %V) { + %shl = shl i32 1, %V + %cmp = icmp eq i32 %shl, 31 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_1_V_eq_31( +; CHECK-NEXT: ret i1 false +} + +define i1 @icmp_shl_1_V_ne_31(i32 %V) { + %shl = shl i32 1, %V + %cmp = icmp ne i32 %shl, 31 + ret i1 %cmp + +; CHECK-LABEL: @icmp_shl_1_V_ne_31( +; CHECK-NEXT: ret i1 true +} |