forked from OSchip/llvm-project
391 lines
7.6 KiB
LLVM
391 lines
7.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
; There should be no 'and' instructions left in any test.
|
|
|
|
define i32 @test1(i32 %A) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%B = and i32 %A, 0
|
|
ret i32 %B
|
|
}
|
|
|
|
define i32 @test2(i32 %A) {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK-NEXT: ret i32 %A
|
|
;
|
|
%B = and i32 %A, -1
|
|
ret i32 %B
|
|
}
|
|
|
|
define i1 @test3(i1 %A) {
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NEXT: ret i1 false
|
|
;
|
|
%B = and i1 %A, false
|
|
ret i1 %B
|
|
}
|
|
|
|
define i1 @test4(i1 %A) {
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NEXT: ret i1 %A
|
|
;
|
|
%B = and i1 %A, true
|
|
ret i1 %B
|
|
}
|
|
|
|
define i32 @test5(i32 %A) {
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NEXT: ret i32 %A
|
|
;
|
|
%B = and i32 %A, %A
|
|
ret i32 %B
|
|
}
|
|
|
|
define i1 @test6(i1 %A) {
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK-NEXT: ret i1 %A
|
|
;
|
|
%B = and i1 %A, %A
|
|
ret i1 %B
|
|
}
|
|
|
|
; A & ~A == 0
|
|
define i32 @test7(i32 %A) {
|
|
; CHECK-LABEL: @test7(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%NotA = xor i32 %A, -1
|
|
%B = and i32 %A, %NotA
|
|
ret i32 %B
|
|
}
|
|
|
|
; AND associates
|
|
define i8 @test8(i8 %A) {
|
|
; CHECK-LABEL: @test8(
|
|
; CHECK-NEXT: ret i8 0
|
|
;
|
|
%B = and i8 %A, 3
|
|
%C = and i8 %B, 4
|
|
ret i8 %C
|
|
}
|
|
|
|
; Test of sign bit, convert to setle %A, 0
|
|
define i1 @test9(i32 %A) {
|
|
; CHECK-LABEL: @test9(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp slt i32 %A, 0
|
|
; CHECK-NEXT: ret i1 [[C]]
|
|
;
|
|
%B = and i32 %A, -2147483648
|
|
%C = icmp ne i32 %B, 0
|
|
ret i1 %C
|
|
}
|
|
|
|
; Test of sign bit, convert to setle %A, 0
|
|
define i1 @test9a(i32 %A) {
|
|
; CHECK-LABEL: @test9a(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp slt i32 %A, 0
|
|
; CHECK-NEXT: ret i1 [[C]]
|
|
;
|
|
%B = and i32 %A, -2147483648
|
|
%C = icmp ne i32 %B, 0
|
|
ret i1 %C
|
|
}
|
|
|
|
define i32 @test10(i32 %A) {
|
|
; CHECK-LABEL: @test10(
|
|
; CHECK-NEXT: ret i32 1
|
|
;
|
|
%B = and i32 %A, 12
|
|
%C = xor i32 %B, 15
|
|
; (X ^ C1) & C2 --> (X & C2) ^ (C1&C2)
|
|
%D = and i32 %C, 1
|
|
ret i32 %D
|
|
}
|
|
|
|
define i32 @test11(i32 %A, i32* %P) {
|
|
; CHECK-LABEL: @test11(
|
|
; CHECK-NEXT: [[B:%.*]] = or i32 %A, 3
|
|
; CHECK-NEXT: [[C:%.*]] = xor i32 [[B]], 12
|
|
; CHECK-NEXT: store i32 [[C]], i32* %P, align 4
|
|
; CHECK-NEXT: ret i32 3
|
|
;
|
|
%B = or i32 %A, 3
|
|
%C = xor i32 %B, 12
|
|
; additional use of C
|
|
store i32 %C, i32* %P
|
|
; %C = and uint %B, 3 --> 3
|
|
%D = and i32 %C, 3
|
|
ret i32 %D
|
|
}
|
|
|
|
define i1 @test12(i32 %A, i32 %B) {
|
|
; CHECK-LABEL: @test12(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 %A, %B
|
|
; CHECK-NEXT: ret i1 [[TMP1]]
|
|
;
|
|
%C1 = icmp ult i32 %A, %B
|
|
%C2 = icmp ule i32 %A, %B
|
|
; (A < B) & (A <= B) === (A < B)
|
|
%D = and i1 %C1, %C2
|
|
ret i1 %D
|
|
}
|
|
|
|
define i1 @test13(i32 %A, i32 %B) {
|
|
; CHECK-LABEL: @test13(
|
|
; CHECK-NEXT: ret i1 false
|
|
;
|
|
%C1 = icmp ult i32 %A, %B
|
|
%C2 = icmp ugt i32 %A, %B
|
|
; (A < B) & (A > B) === false
|
|
%D = and i1 %C1, %C2
|
|
ret i1 %D
|
|
}
|
|
|
|
define i1 @test14(i8 %A) {
|
|
; CHECK-LABEL: @test14(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp slt i8 %A, 0
|
|
; CHECK-NEXT: ret i1 [[C]]
|
|
;
|
|
%B = and i8 %A, -128
|
|
%C = icmp ne i8 %B, 0
|
|
ret i1 %C
|
|
}
|
|
|
|
define i8 @test15(i8 %A) {
|
|
; CHECK-LABEL: @test15(
|
|
; CHECK-NEXT: ret i8 0
|
|
;
|
|
%B = lshr i8 %A, 7
|
|
; Always equals zero
|
|
%C = and i8 %B, 2
|
|
ret i8 %C
|
|
}
|
|
|
|
define i8 @test16(i8 %A) {
|
|
; CHECK-LABEL: @test16(
|
|
; CHECK-NEXT: ret i8 0
|
|
;
|
|
%B = shl i8 %A, 2
|
|
%C = and i8 %B, 3
|
|
ret i8 %C
|
|
}
|
|
|
|
;; ~(~X & Y) --> (X | ~Y)
|
|
define i8 @test17(i8 %X, i8 %Y) {
|
|
; CHECK-LABEL: @test17(
|
|
; CHECK-NEXT: [[Y_NOT:%.*]] = xor i8 %Y, -1
|
|
; CHECK-NEXT: [[D:%.*]] = or i8 %X, [[Y_NOT]]
|
|
; CHECK-NEXT: ret i8 [[D]]
|
|
;
|
|
%B = xor i8 %X, -1
|
|
%C = and i8 %B, %Y
|
|
%D = xor i8 %C, -1
|
|
ret i8 %D
|
|
}
|
|
|
|
define i1 @test18(i32 %A) {
|
|
; CHECK-LABEL: @test18(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp ugt i32 %A, 127
|
|
; CHECK-NEXT: ret i1 [[C]]
|
|
;
|
|
%B = and i32 %A, -128
|
|
;; C >= 128
|
|
%C = icmp ne i32 %B, 0
|
|
ret i1 %C
|
|
}
|
|
|
|
define <2 x i1> @test18_vec(<2 x i32> %A) {
|
|
; CHECK-LABEL: @test18_vec(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp ugt <2 x i32> %A, <i32 127, i32 127>
|
|
; CHECK-NEXT: ret <2 x i1> [[C]]
|
|
;
|
|
%B = and <2 x i32> %A, <i32 -128, i32 -128>
|
|
%C = icmp ne <2 x i32> %B, zeroinitializer
|
|
ret <2 x i1> %C
|
|
}
|
|
|
|
define i1 @test18a(i8 %A) {
|
|
; CHECK-LABEL: @test18a(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp ult i8 %A, 2
|
|
; CHECK-NEXT: ret i1 [[C]]
|
|
;
|
|
%B = and i8 %A, -2
|
|
%C = icmp eq i8 %B, 0
|
|
ret i1 %C
|
|
}
|
|
|
|
define <2 x i1> @test18a_vec(<2 x i8> %A) {
|
|
; CHECK-LABEL: @test18a_vec(
|
|
; CHECK-NEXT: [[C:%.*]] = icmp ult <2 x i8> %A, <i8 2, i8 2>
|
|
; CHECK-NEXT: ret <2 x i1> [[C]]
|
|
;
|
|
%B = and <2 x i8> %A, <i8 -2, i8 -2>
|
|
%C = icmp eq <2 x i8> %B, zeroinitializer
|
|
ret <2 x i1> %C
|
|
}
|
|
|
|
define i32 @test19(i32 %A) {
|
|
; CHECK-LABEL: @test19(
|
|
; CHECK-NEXT: [[B:%.*]] = shl i32 %A, 3
|
|
; CHECK-NEXT: ret i32 [[B]]
|
|
;
|
|
%B = shl i32 %A, 3
|
|
;; Clearing a zero bit
|
|
%C = and i32 %B, -2
|
|
ret i32 %C
|
|
}
|
|
|
|
define i8 @test20(i8 %A) {
|
|
; CHECK-LABEL: @test20(
|
|
; CHECK-NEXT: [[C:%.*]] = lshr i8 %A, 7
|
|
; CHECK-NEXT: ret i8 [[C]]
|
|
;
|
|
%C = lshr i8 %A, 7
|
|
;; Unneeded
|
|
%D = and i8 %C, 1
|
|
ret i8 %D
|
|
}
|
|
|
|
define i1 @test23(i32 %A) {
|
|
; CHECK-LABEL: @test23(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i32 %A, 2
|
|
; CHECK-NEXT: ret i1 [[TMP1]]
|
|
;
|
|
%B = icmp sgt i32 %A, 1
|
|
%C = icmp sle i32 %A, 2
|
|
;; A == 2
|
|
%D = and i1 %B, %C
|
|
ret i1 %D
|
|
}
|
|
|
|
define i1 @test24(i32 %A) {
|
|
; CHECK-LABEL: @test24(
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i32 %A, 2
|
|
; CHECK-NEXT: ret i1 [[TMP1]]
|
|
;
|
|
%B = icmp sgt i32 %A, 1
|
|
%C = icmp ne i32 %A, 2
|
|
;; A > 2
|
|
%D = and i1 %B, %C
|
|
ret i1 %D
|
|
}
|
|
|
|
define i1 @test25(i32 %A) {
|
|
; CHECK-LABEL: @test25(
|
|
; CHECK-NEXT: [[A_OFF:%.*]] = add i32 %A, -50
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[A_OFF]], 50
|
|
; CHECK-NEXT: ret i1 [[TMP1]]
|
|
;
|
|
%B = icmp sge i32 %A, 50
|
|
%C = icmp slt i32 %A, 100
|
|
;; (A-50) <u 50
|
|
%D = and i1 %B, %C
|
|
ret i1 %D
|
|
}
|
|
|
|
define i1 @test26(i32 %A) {
|
|
; CHECK-LABEL: @test26(
|
|
; CHECK-NEXT: [[A_OFF:%.*]] = add i32 %A, -49
|
|
; CHECK-NEXT: [[A_CMP:%.*]] = icmp ugt i32 [[A_OFF]], 1
|
|
; CHECK-NEXT: ret i1 [[A_CMP]]
|
|
;
|
|
%B = icmp ne i32 %A, 49
|
|
%C = icmp ne i32 %A, 50
|
|
;; (A-49) > 1
|
|
%D = and i1 %B, %C
|
|
ret i1 %D
|
|
}
|
|
|
|
define i8 @test27(i8 %A) {
|
|
; CHECK-LABEL: @test27(
|
|
; CHECK-NEXT: ret i8 0
|
|
;
|
|
%B = and i8 %A, 4
|
|
%C = sub i8 %B, 16
|
|
;; 0xF0
|
|
%D = and i8 %C, -16
|
|
%E = add i8 %D, 16
|
|
ret i8 %E
|
|
}
|
|
|
|
;; This is juse a zero extending shr.
|
|
define i32 @test28(i32 %X) {
|
|
; CHECK-LABEL: @test28(
|
|
; CHECK-NEXT: [[Y1:%.*]] = lshr i32 %X, 24
|
|
; CHECK-NEXT: ret i32 [[Y1]]
|
|
;
|
|
;; Sign extend
|
|
%Y = ashr i32 %X, 24
|
|
;; Mask out sign bits
|
|
%Z = and i32 %Y, 255
|
|
ret i32 %Z
|
|
}
|
|
|
|
define i32 @test29(i8 %X) {
|
|
; CHECK-LABEL: @test29(
|
|
; CHECK-NEXT: [[Y:%.*]] = zext i8 %X to i32
|
|
; CHECK-NEXT: ret i32 [[Y]]
|
|
;
|
|
%Y = zext i8 %X to i32
|
|
;; Zero extend makes this unneeded.
|
|
%Z = and i32 %Y, 255
|
|
ret i32 %Z
|
|
}
|
|
|
|
define i32 @test30(i1 %X) {
|
|
; CHECK-LABEL: @test30(
|
|
; CHECK-NEXT: [[Y:%.*]] = zext i1 %X to i32
|
|
; CHECK-NEXT: ret i32 [[Y]]
|
|
;
|
|
%Y = zext i1 %X to i32
|
|
%Z = and i32 %Y, 1
|
|
ret i32 %Z
|
|
}
|
|
|
|
define i32 @test31(i1 %X) {
|
|
; CHECK-LABEL: @test31(
|
|
; CHECK-NEXT: [[Y:%.*]] = zext i1 %X to i32
|
|
; CHECK-NEXT: [[Z:%.*]] = shl nuw nsw i32 [[Y]], 4
|
|
; CHECK-NEXT: ret i32 [[Z]]
|
|
;
|
|
%Y = zext i1 %X to i32
|
|
%Z = shl i32 %Y, 4
|
|
%A = and i32 %Z, 16
|
|
ret i32 %A
|
|
}
|
|
|
|
define i32 @test32(i32 %In) {
|
|
; CHECK-LABEL: @test32(
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
%Y = and i32 %In, 16
|
|
%Z = lshr i32 %Y, 2
|
|
%A = and i32 %Z, 1
|
|
ret i32 %A
|
|
}
|
|
|
|
;; Code corresponding to one-bit bitfield ^1.
|
|
define i32 @test33(i32 %b) {
|
|
; CHECK-LABEL: @test33(
|
|
; CHECK-NEXT: [[TMP_13:%.*]] = xor i32 %b, 1
|
|
; CHECK-NEXT: ret i32 [[TMP_13]]
|
|
;
|
|
%tmp.4.mask = and i32 %b, 1
|
|
%tmp.10 = xor i32 %tmp.4.mask, 1
|
|
%tmp.12 = and i32 %b, -2
|
|
%tmp.13 = or i32 %tmp.12, %tmp.10
|
|
ret i32 %tmp.13
|
|
}
|
|
|
|
define i32 @test34(i32 %A, i32 %B) {
|
|
; CHECK-LABEL: @test34(
|
|
; CHECK-NEXT: ret i32 %B
|
|
;
|
|
%tmp.2 = or i32 %B, %A
|
|
%tmp.4 = and i32 %tmp.2, %B
|
|
ret i32 %tmp.4
|
|
}
|
|
|