[InstCombine] auto-generate exact checks

Note that several of these tests belong in InstSimplify rather than
InstCombine because they return existing operands or constants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@278684 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjay Patel 2016-08-15 17:19:07 +00:00
parent e0a314cca9
commit 12b2b51065

View File

@ -1,160 +1,196 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; This test makes sure that shift instructions are properly eliminated
; even with arbitrary precision integers.
; RUN: opt < %s -instcombine -S | FileCheck %s
; CHECK-LABEL: @test1(
; CHECK-NOT: sh
define i47 @test1(i47 %A) {
%B = shl i47 %A, 0 ; <i47> [#uses=1]
ret i47 %B
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret i47 %A
;
%B = shl i47 %A, 0
ret i47 %B
}
; CHECK-LABEL: @test2(
; CHECK-NOT: sh
define i41 @test2(i7 %X) {
%A = zext i7 %X to i41 ; <i41> [#uses=1]
%B = shl i41 0, %A ; <i41> [#uses=1]
ret i41 %B
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i41 0
;
%A = zext i7 %X to i41
%B = shl i41 0, %A
ret i41 %B
}
; CHECK-LABEL: @test3(
; CHECK-NOT: sh
define i41 @test3(i41 %A) {
%B = ashr i41 %A, 0 ; <i41> [#uses=1]
ret i41 %B
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret i41 %A
;
%B = ashr i41 %A, 0
ret i41 %B
}
; CHECK-LABEL: @test4(
; CHECK-NOT: sh
define i39 @test4(i7 %X) {
%A = zext i7 %X to i39 ; <i39> [#uses=1]
%B = ashr i39 0, %A ; <i39> [#uses=1]
ret i39 %B
; CHECK-LABEL: @test4(
; CHECK-NEXT: ret i39 0
;
%A = zext i7 %X to i39
%B = ashr i39 0, %A
ret i39 %B
}
; CHECK-LABEL: @test5(
; CHECK-NOT: sh
define i55 @test5(i55 %A) {
%B = lshr i55 %A, 55 ; <i55> [#uses=1]
ret i55 %B
; CHECK-LABEL: @test5(
; CHECK-NEXT: ret i55 undef
;
%B = lshr i55 %A, 55
ret i55 %B
}
; CHECK-LABEL: @test5a(
; CHECK-NOT: sh
define i32 @test5a(i32 %A) {
%B = shl i32 %A, 32 ; <i32> [#uses=1]
ret i32 %B
; CHECK-LABEL: @test5a(
; CHECK-NEXT: ret i32 undef
;
%B = shl i32 %A, 32
ret i32 %B
}
; CHECK-LABEL: @test6(
; CHECK: mul i55 %A, 6
define i55 @test6(i55 %A) {
%B = shl i55 %A, 1 ; <i55> [#uses=1]
%C = mul i55 %B, 3 ; <i55> [#uses=1]
ret i55 %C
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[C:%.*]] = mul i55 %A, 6
; CHECK-NEXT: ret i55 [[C]]
;
%B = shl i55 %A, 1
%C = mul i55 %B, 3
ret i55 %C
}
; CHECK-LABEL: @test6a(
; CHECK: mul i55 %A, 6
define i55 @test6a(i55 %A) {
%B = mul i55 %A, 3 ; <i55> [#uses=1]
%C = shl i55 %B, 1 ; <i55> [#uses=1]
ret i55 %C
; CHECK-LABEL: @test6a(
; CHECK-NEXT: [[C:%.*]] = mul i55 %A, 6
; CHECK-NEXT: ret i55 [[C]]
;
%B = mul i55 %A, 3
%C = shl i55 %B, 1
ret i55 %C
}
; CHECK-LABEL: @test7(
; CHECK-NOT: sh
define i29 @test7(i8 %X) {
%A = zext i8 %X to i29 ; <i29> [#uses=1]
%B = ashr i29 -1, %A ; <i29> [#uses=1]
ret i29 %B
; CHECK-LABEL: @test7(
; CHECK-NEXT: ret i29 -1
;
%A = zext i8 %X to i29
%B = ashr i29 -1, %A
ret i29 %B
}
; CHECK-LABEL: @test8(
; CHECK-NOT: sh
define i7 @test8(i7 %A) {
%B = shl i7 %A, 4 ; <i7> [#uses=1]
%C = shl i7 %B, 3 ; <i7> [#uses=1]
ret i7 %C
; CHECK-LABEL: @test8(
; CHECK-NEXT: ret i7 0
;
%B = shl i7 %A, 4
%C = shl i7 %B, 3
ret i7 %C
}
; CHECK-LABEL: @test9(
; CHECK-NOT: sh
define i17 @test9(i17 %A) {
%B = shl i17 %A, 16 ; <i17> [#uses=1]
%C = lshr i17 %B, 16 ; <i17> [#uses=1]
ret i17 %C
; CHECK-LABEL: @test9(
; CHECK-NEXT: [[B:%.*]] = and i17 %A, 1
; CHECK-NEXT: ret i17 [[B]]
;
%B = shl i17 %A, 16
%C = lshr i17 %B, 16
ret i17 %C
}
; CHECK-LABEL: @test10(
; CHECK-NOT: sh
define i19 @test10(i19 %A) {
%B = lshr i19 %A, 18 ; <i19> [#uses=1]
%C = shl i19 %B, 18 ; <i19> [#uses=1]
ret i19 %C
; CHECK-LABEL: @test10(
; CHECK-NEXT: [[B:%.*]] = and i19 %A, -262144
; CHECK-NEXT: ret i19 [[B]]
;
%B = lshr i19 %A, 18
%C = shl i19 %B, 18
ret i19 %C
}
; CHECK-LABEL: @test11(
; Don't hide the shl from scalar evolution. DAGCombine will get it.
; CHECK: shl
define i23 @test11(i23 %A) {
%a = mul i23 %A, 3 ; <i23> [#uses=1]
%B = lshr i23 %a, 11 ; <i23> [#uses=1]
%C = shl i23 %B, 12 ; <i23> [#uses=1]
ret i23 %C
; CHECK-LABEL: @test11(
; CHECK-NEXT: [[A:%.*]] = mul i23 %A, 3
; CHECK-NEXT: [[B:%.*]] = lshr i23 [[A]], 11
; CHECK-NEXT: [[C:%.*]] = shl i23 [[B]], 12
; CHECK-NEXT: ret i23 [[C]]
;
%a = mul i23 %A, 3
%B = lshr i23 %a, 11
%C = shl i23 %B, 12
ret i23 %C
}
; CHECK-LABEL: @test12(
; CHECK-NOT: sh
define i47 @test12(i47 %A) {
%B = ashr i47 %A, 8 ; <i47> [#uses=1]
%C = shl i47 %B, 8 ; <i47> [#uses=1]
ret i47 %C
; CHECK-LABEL: @test12(
; CHECK-NEXT: [[B1:%.*]] = and i47 %A, -256
; CHECK-NEXT: ret i47 [[B1]]
;
%B = ashr i47 %A, 8
%C = shl i47 %B, 8
ret i47 %C
}
; CHECK-LABEL: @test13(
; Don't hide the shl from scalar evolution. DAGCombine will get it.
; CHECK: shl
define i18 @test13(i18 %A) {
%a = mul i18 %A, 3 ; <i18> [#uses=1]
%B = ashr i18 %a, 8 ; <i18> [#uses=1]
%C = shl i18 %B, 9 ; <i18> [#uses=1]
ret i18 %C
; CHECK-LABEL: @test13(
; CHECK-NEXT: [[A:%.*]] = mul i18 %A, 3
; CHECK-NEXT: [[B1:%.*]] = lshr i18 [[A]], 8
; CHECK-NEXT: [[C:%.*]] = shl i18 [[B1]], 9
; CHECK-NEXT: ret i18 [[C]]
;
%a = mul i18 %A, 3
%B = ashr i18 %a, 8
%C = shl i18 %B, 9
ret i18 %C
}
; CHECK-LABEL: @test14(
; CHECK-NOT: sh
define i35 @test14(i35 %A) {
%B = lshr i35 %A, 4 ; <i35> [#uses=1]
%C = or i35 %B, 1234 ; <i35> [#uses=1]
%D = shl i35 %C, 4 ; <i35> [#uses=1]
ret i35 %D
; CHECK-LABEL: @test14(
; CHECK-NEXT: [[B:%.*]] = and i35 %A, -19760
; CHECK-NEXT: [[C:%.*]] = or i35 [[B]], 19744
; CHECK-NEXT: ret i35 [[C]]
;
%B = lshr i35 %A, 4
%C = or i35 %B, 1234
%D = shl i35 %C, 4
ret i35 %D
}
; CHECK-LABEL: @test14a(
; CHECK-NOT: sh
define i79 @test14a(i79 %A) {
%B = shl i79 %A, 4 ; <i79> [#uses=1]
%C = and i79 %B, 1234 ; <i79> [#uses=1]
%D = lshr i79 %C, 4 ; <i79> [#uses=1]
ret i79 %D
; CHECK-LABEL: @test14a(
; CHECK-NEXT: [[C:%.*]] = and i79 %A, 77
; CHECK-NEXT: ret i79 [[C]]
;
%B = shl i79 %A, 4
%C = and i79 %B, 1234
%D = lshr i79 %C, 4
ret i79 %D
}
; CHECK-LABEL: @test15(
; CHECK-NOT: sh
define i45 @test15(i1 %C) {
%A = select i1 %C, i45 3, i45 1 ; <i45> [#uses=1]
%V = shl i45 %A, 2 ; <i45> [#uses=1]
ret i45 %V
; CHECK-LABEL: @test15(
; CHECK-NEXT: [[A:%.*]] = select i1 %C, i45 12, i45 4
; CHECK-NEXT: ret i45 [[A]]
;
%A = select i1 %C, i45 3, i45 1
%V = shl i45 %A, 2
ret i45 %V
}
; CHECK-LABEL: @test15a(
; CHECK-NOT: sh
define i53 @test15a(i1 %X) {
%A = select i1 %X, i8 3, i8 1 ; <i8> [#uses=1]
%B = zext i8 %A to i53 ; <i53> [#uses=1]
%V = shl i53 64, %B ; <i53> [#uses=1]
ret i53 %V
; CHECK-LABEL: @test15a(
; CHECK-NEXT: [[V:%.*]] = select i1 %X, i53 512, i53 128
; CHECK-NEXT: ret i53 [[V]]
;
%A = select i1 %X, i8 3, i8 1
%B = zext i8 %A to i53
%V = shl i53 64, %B
ret i53 %V
}
define i1 @test16(i84 %X) {
@ -182,86 +218,109 @@ define <2 x i1> @test16vec(<2 x i84> %X) {
ret <2 x i1> %cmp
}
; CHECK-LABEL: @test17(
; CHECK-NOT: sh
define i1 @test17(i106 %A) {
%B = lshr i106 %A, 3 ; <i106> [#uses=1]
%C = icmp eq i106 %B, 1234 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test17(
; CHECK-NEXT: [[B_MASK:%.*]] = and i106 %A, -8
; CHECK-NEXT: [[C:%.*]] = icmp eq i106 [[B_MASK]], 9872
; CHECK-NEXT: ret i1 [[C]]
;
%B = lshr i106 %A, 3
%C = icmp eq i106 %B, 1234
ret i1 %C
}
; CHECK-LABEL: @test18(
; CHECK-NOT: sh
define i1 @test18(i11 %A) {
%B = lshr i11 %A, 10 ; <i11> [#uses=1]
%C = icmp eq i11 %B, 123 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test18(
; CHECK-NEXT: ret i1 false
;
%B = lshr i11 %A, 10
%C = icmp eq i11 %B, 123
ret i1 %C
}
; CHECK-LABEL: @test19(
; CHECK-NOT: sh
define i1 @test19(i37 %A) {
%B = ashr i37 %A, 2 ; <i37> [#uses=1]
%C = icmp eq i37 %B, 0 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test19(
; CHECK-NEXT: [[C:%.*]] = icmp ult i37 %A, 4
; CHECK-NEXT: ret i1 [[C]]
;
%B = ashr i37 %A, 2
%C = icmp eq i37 %B, 0
ret i1 %C
}
; CHECK-LABEL: @test19a(
; CHECK-NOT: sh
define i1 @test19a(i39 %A) {
%B = ashr i39 %A, 2 ; <i39> [#uses=1]
%C = icmp eq i39 %B, -1 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test19a(
; CHECK-NEXT: [[C:%.*]] = icmp ugt i39 %A, -5
; CHECK-NEXT: ret i1 [[C]]
;
%B = ashr i39 %A, 2
%C = icmp eq i39 %B, -1
ret i1 %C
}
; CHECK-LABEL: @test20(
; CHECK-NOT: sh
define i1 @test20(i13 %A) {
%B = ashr i13 %A, 12 ; <i13> [#uses=1]
%C = icmp eq i13 %B, 123 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test20(
; CHECK-NEXT: ret i1 false
;
%B = ashr i13 %A, 12
%C = icmp eq i13 %B, 123
ret i1 %C
}
; CHECK-LABEL: @test21(
; CHECK-NOT: sh
define i1 @test21(i12 %A) {
%B = shl i12 %A, 6 ; <i12> [#uses=1]
%C = icmp eq i12 %B, -128 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test21(
; CHECK-NEXT: [[B_MASK:%.*]] = and i12 %A, 63
; CHECK-NEXT: [[C:%.*]] = icmp eq i12 [[B_MASK]], 62
; CHECK-NEXT: ret i1 [[C]]
;
%B = shl i12 %A, 6
%C = icmp eq i12 %B, -128
ret i1 %C
}
; CHECK-LABEL: @test22(
; CHECK-NOT: sh
define i1 @test22(i14 %A) {
%B = shl i14 %A, 7 ; <i14> [#uses=1]
%C = icmp eq i14 %B, 0 ; <i1> [#uses=1]
ret i1 %C
; CHECK-LABEL: @test22(
; CHECK-NEXT: [[B_MASK:%.*]] = and i14 %A, 127
; CHECK-NEXT: [[C:%.*]] = icmp eq i14 [[B_MASK]], 0
; CHECK-NEXT: ret i1 [[C]]
;
%B = shl i14 %A, 7
%C = icmp eq i14 %B, 0
ret i1 %C
}
; CHECK-LABEL: @test23(
; CHECK-NOT: sh
define i11 @test23(i44 %A) {
%B = shl i44 %A, 33 ; <i44> [#uses=1]
%C = ashr i44 %B, 33 ; <i44> [#uses=1]
%D = trunc i44 %C to i11 ; <i8> [#uses=1]
ret i11 %D
; CHECK-LABEL: @test23(
; CHECK-NEXT: [[D:%.*]] = trunc i44 %A to i11
; CHECK-NEXT: ret i11 [[D]]
;
%B = shl i44 %A, 33
%C = ashr i44 %B, 33
%D = trunc i44 %C to i11
ret i11 %D
}
; CHECK-LABEL: @test25(
; CHECK-NOT: sh
define i37 @test25(i37 %tmp.2, i37 %AA) {
%x = lshr i37 %AA, 17 ; <i37> [#uses=1]
%tmp.3 = lshr i37 %tmp.2, 17 ; <i37> [#uses=1]
%tmp.5 = add i37 %tmp.3, %x ; <i37> [#uses=1]
%tmp.6 = shl i37 %tmp.5, 17 ; <i37> [#uses=1]
ret i37 %tmp.6
; CHECK-LABEL: @test25(
; CHECK-NEXT: [[TMP_3:%.*]] = and i37 %tmp.2, -131072
; CHECK-NEXT: [[X2:%.*]] = add i37 [[TMP_3]], %AA
; CHECK-NEXT: [[TMP_6:%.*]] = and i37 [[X2]], -131072
; CHECK-NEXT: ret i37 [[TMP_6]]
;
%x = lshr i37 %AA, 17
%tmp.3 = lshr i37 %tmp.2, 17
%tmp.5 = add i37 %tmp.3, %x
%tmp.6 = shl i37 %tmp.5, 17
ret i37 %tmp.6
}
; CHECK-LABEL: @test26(
; CHECK-NOT: sh
define i40 @test26(i40 %A) {
%B = lshr i40 %A, 1 ; <i40> [#uses=1]
%C = bitcast i40 %B to i40 ; <i40> [#uses=1]
%D = shl i40 %C, 1 ; <i40> [#uses=1]
ret i40 %D
; CHECK-LABEL: @test26(
; CHECK-NEXT: [[B:%.*]] = and i40 %A, -2
; CHECK-NEXT: ret i40 [[B]]
;
%B = lshr i40 %A, 1
%C = bitcast i40 %B to i40
%D = shl i40 %C, 1
ret i40 %D
}