forked from OSchip/llvm-project
112 lines
3.4 KiB
LLVM
112 lines
3.4 KiB
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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;CHECK: @and_consts
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;CHECK: and i32 %k, 12
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;CHECK: icmp ne i32 %0, 12
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;CHECK: ret
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define i1 @and_consts(i32 %k, i32 %c1, i32 %c2) {
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bb:
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%tmp1 = and i32 4, %k
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%tmp2 = icmp eq i32 %tmp1, 0
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%tmp5 = and i32 8, %k
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%tmp6 = icmp eq i32 %tmp5, 0
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%or = or i1 %tmp2, %tmp6
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ret i1 %or
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}
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;CHECK: @foo1_and
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;CHECK: shl i32 1, %c1
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;CHECK-NEXT: lshr i32 -2147483648, %c2
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;CHECK-NEXT: or i32
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;CHECK-NEXT: and i32
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;CHECK-NEXT: icmp ne i32 %1, %0
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;CHECK: ret
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define i1 @foo1_and(i32 %k, i32 %c1, i32 %c2) {
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bb:
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%tmp = shl i32 1, %c1
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%tmp4 = lshr i32 -2147483648, %c2
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%tmp1 = and i32 %tmp, %k
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%tmp2 = icmp eq i32 %tmp1, 0
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%tmp5 = and i32 %tmp4, %k
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%tmp6 = icmp eq i32 %tmp5, 0
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%or = or i1 %tmp2, %tmp6
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ret i1 %or
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}
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; Same as above but with operands commuted one of the ands, but not the other.
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define i1 @foo1_and_commuted(i32 %k, i32 %c1, i32 %c2) {
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; CHECK-LABEL: @foo1_and_commuted(
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; CHECK-NEXT: [[K2:%.*]] = mul i32 [[K:%.*]], [[K]]
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; CHECK-NEXT: [[TMP:%.*]] = shl i32 1, [[C1:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = lshr i32 -2147483648, [[C2:%.*]]
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; CHECK-NEXT: [[TMP0:%.*]] = or i32 [[TMP]], [[TMP4]]
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; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[K2]], [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i32 [[TMP1]], [[TMP0]]
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%k2 = mul i32 %k, %k ; to trick the complexity sorting
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%tmp = shl i32 1, %c1
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%tmp4 = lshr i32 -2147483648, %c2
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%tmp1 = and i32 %k2, %tmp
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%tmp2 = icmp eq i32 %tmp1, 0
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%tmp5 = and i32 %tmp4, %k2
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%tmp6 = icmp eq i32 %tmp5, 0
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%or = or i1 %tmp2, %tmp6
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ret i1 %or
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}
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define i1 @or_consts(i32 %k, i32 %c1, i32 %c2) {
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; CHECK-LABEL: @or_consts(
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; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[K:%.*]], 12
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; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 12
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; CHECK-NEXT: ret i1 [[TMP2]]
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;
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%tmp1 = and i32 4, %k
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%tmp2 = icmp ne i32 %tmp1, 0
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%tmp5 = and i32 8, %k
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%tmp6 = icmp ne i32 %tmp5, 0
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%or = and i1 %tmp2, %tmp6
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ret i1 %or
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}
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define i1 @foo1_or(i32 %k, i32 %c1, i32 %c2) {
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; CHECK-LABEL: @foo1_or(
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; CHECK-NEXT: [[TMP:%.*]] = shl i32 1, [[C1:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = lshr i32 -2147483648, [[C2:%.*]]
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; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[TMP]], [[TMP4]]
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; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[K:%.*]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret i1 [[TMP3]]
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;
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%tmp = shl i32 1, %c1
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%tmp4 = lshr i32 -2147483648, %c2
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%tmp1 = and i32 %tmp, %k
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%tmp2 = icmp ne i32 %tmp1, 0
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%tmp5 = and i32 %tmp4, %k
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%tmp6 = icmp ne i32 %tmp5, 0
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%or = and i1 %tmp2, %tmp6
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ret i1 %or
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}
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; Same as above but with operands commuted one of the ors, but not the other.
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define i1 @foo1_or_commuted(i32 %k, i32 %c1, i32 %c2) {
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; CHECK-LABEL: @foo1_or_commuted(
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; CHECK-NEXT: [[K2:%.*]] = mul i32 [[K:%.*]], [[K]]
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; CHECK-NEXT: [[TMP:%.*]] = shl i32 1, [[C1:%.*]]
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; CHECK-NEXT: [[TMP4:%.*]] = lshr i32 -2147483648, [[C2:%.*]]
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; CHECK-NEXT: [[TMP1:%.*]] = or i32 [[TMP]], [[TMP4]]
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; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[K2]], [[TMP1]]
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP2]], [[TMP1]]
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; CHECK-NEXT: ret i1 [[TMP3]]
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;
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%k2 = mul i32 %k, %k ; to trick the complexity sorting
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%tmp = shl i32 1, %c1
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%tmp4 = lshr i32 -2147483648, %c2
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%tmp1 = and i32 %k2, %tmp
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%tmp2 = icmp ne i32 %tmp1, 0
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%tmp5 = and i32 %tmp4, %k2
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%tmp6 = icmp ne i32 %tmp5, 0
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%or = and i1 %tmp2, %tmp6
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ret i1 %or
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}
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