blob: ebd8a43c76ea5b52cdabbd4fca5fe9c9f0cf7c54 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; This test makes sure that all icmp instructions are eliminated.
; RUN: opt < %s -instcombine -S | FileCheck %s
@X = external global i32
define i1 @test1(i32 %A) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret i1 false
;
%B = icmp eq i32 %A, %A
; Never true
%C = icmp eq i32* @X, null
%D = and i1 %B, %C
ret i1 %D
}
define i1 @test2(i32 %A) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret i1 true
;
%B = icmp ne i32 %A, %A
; Never false
%C = icmp ne i32* @X, null
%D = or i1 %B, %C
ret i1 %D
}
define i1 @test3(i32 %A) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret i1 false
;
%B = icmp slt i32 %A, %A
ret i1 %B
}
define i1 @test4(i32 %A) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: ret i1 false
;
%B = icmp sgt i32 %A, %A
ret i1 %B
}
define i1 @test5(i32 %A) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: ret i1 true
;
%B = icmp sle i32 %A, %A
ret i1 %B
}
define i1 @test6(i32 %A) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: ret i1 true
;
%B = icmp sge i32 %A, %A
ret i1 %B
}
define i1 @test7(i32 %A) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: ret i1 true
;
%B = icmp uge i32 %A, 0
ret i1 %B
}
define i1 @test8(i32 %A) {
; CHECK-LABEL: @test8(
; CHECK-NEXT: ret i1 false
;
%B = icmp ult i32 %A, 0
ret i1 %B
}
;; test operations on boolean values these should all be eliminated$a
define i1 @test9(i1 %A) {
; CHECK-LABEL: @test9(
; CHECK-NEXT: ret i1 false
;
%B = icmp ult i1 %A, false
ret i1 %B
}
define i1 @test10(i1 %A) {
; CHECK-LABEL: @test10(
; CHECK-NEXT: ret i1 false
;
%B = icmp ugt i1 %A, true
ret i1 %B
}
define i1 @test11(i1 %A) {
; CHECK-LABEL: @test11(
; CHECK-NEXT: ret i1 true
;
%B = icmp ule i1 %A, true
ret i1 %B
}
define i1 @test12(i1 %A) {
; CHECK-LABEL: @test12(
; CHECK-NEXT: ret i1 true
;
%B = icmp uge i1 %A, false
ret i1 %B
}
define i1 @test13(i1 %A, i1 %B) {
; CHECK-LABEL: @test13(
; CHECK-NEXT: [[TMP1:%.*]] = xor i1 %B, true
; CHECK-NEXT: [[C:%.*]] = or i1 [[TMP1]], %A
; CHECK-NEXT: ret i1 [[C]]
;
%C = icmp uge i1 %A, %B
ret i1 %C
}
define <2 x i1> @test13vec(<2 x i1> %A, <2 x i1> %B) {
; CHECK-LABEL: @test13vec(
; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i1> %B, <i1 true, i1 true>
; CHECK-NEXT: [[C:%.*]] = or <2 x i1> [[TMP1]], %A
; CHECK-NEXT: ret <2 x i1> [[C]]
;
%C = icmp uge <2 x i1> %A, %B
ret <2 x i1> %C
}
define i1 @test14(i1 %A, i1 %B) {
; CHECK-LABEL: @test14(
; CHECK-NEXT: [[TMP1:%.*]] = xor i1 %A, %B
; CHECK-NEXT: [[C:%.*]] = xor i1 [[TMP1]], true
; CHECK-NEXT: ret i1 [[C]]
;
%C = icmp eq i1 %A, %B
ret i1 %C
}
define <3 x i1> @test14vec(<3 x i1> %A, <3 x i1> %B) {
; CHECK-LABEL: @test14vec(
; CHECK-NEXT: [[TMP1:%.*]] = xor <3 x i1> %A, %B
; CHECK-NEXT: [[C:%.*]] = xor <3 x i1> [[TMP1]], <i1 true, i1 true, i1 true>
; CHECK-NEXT: ret <3 x i1> [[C]]
;
%C = icmp eq <3 x i1> %A, %B
ret <3 x i1> %C
}
define i1 @bool_eq0(i64 %a) {
; CHECK-LABEL: @bool_eq0(
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i64 %a, 1
; CHECK-NEXT: ret i1 [[TMP1]]
;
%b = icmp sgt i64 %a, 0
%c = icmp eq i64 %a, 1
%notc = icmp eq i1 %c, false
%and = and i1 %b, %notc
ret i1 %and
}
; This is equivalent to the previous test.
define i1 @xor_of_icmps(i64 %a) {
; CHECK-LABEL: @xor_of_icmps(
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i64 %a, 1
; CHECK-NEXT: ret i1 [[TMP1]]
;
%b = icmp sgt i64 %a, 0
%c = icmp eq i64 %a, 1
%xor = xor i1 %c, %b
ret i1 %xor
}
; This is also equivalent to the previous test.
define i1 @xor_of_icmps_commute(i64 %a) {
; CHECK-LABEL: @xor_of_icmps_commute(
; CHECK-NEXT: [[TMP1:%.*]] = icmp sgt i64 %a, 1
; CHECK-NEXT: ret i1 [[TMP1]]
;
%b = icmp sgt i64 %a, 0
%c = icmp eq i64 %a, 1
%xor = xor i1 %b, %c
ret i1 %xor
}
; FIXME: This is (a != 5).
define i1 @xor_of_icmps_folds_more(i64 %a) {
; CHECK-LABEL: @xor_of_icmps_folds_more(
; CHECK-NEXT: [[B:%.*]] = icmp sgt i64 %a, 4
; CHECK-NEXT: [[C:%.*]] = icmp slt i64 %a, 6
; CHECK-NEXT: [[XOR:%.*]] = xor i1 [[B]], [[C]]
; CHECK-NEXT: ret i1 [[XOR]]
;
%b = icmp sgt i64 %a, 4
%c = icmp slt i64 %a, 6
%xor = xor i1 %b, %c
ret i1 %xor
}
; https://bugs.llvm.org/show_bug.cgi?id=2844
define i32 @PR2844(i32 %x) {
; CHECK-LABEL: @PR2844(
; CHECK-NEXT: [[A:%.*]] = icmp ne i32 %x, 0
; CHECK-NEXT: [[B:%.*]] = icmp sgt i32 %x, -638208502
; CHECK-NEXT: [[TMP1:%.*]] = and i1 [[A]], [[B]]
; CHECK-NEXT: [[SEL:%.*]] = zext i1 [[TMP1]] to i32
; CHECK-NEXT: ret i32 [[SEL]]
;
%A = icmp eq i32 %x, 0
%B = icmp slt i32 %x, -638208501
%or = or i1 %A, %B
%sel = select i1 %or, i32 0, i32 1
ret i32 %sel
}
define i1 @test16(i32 %A) {
; CHECK-LABEL: @test16(
; CHECK-NEXT: ret i1 false
;
%B = and i32 %A, 5
; Is never true
%C = icmp eq i32 %B, 8
ret i1 %C
}
define i1 @test17(i8 %A) {
; CHECK-LABEL: @test17(
; CHECK-NEXT: ret i1 false
;
%B = or i8 %A, 1
; Always false
%C = icmp eq i8 %B, 2
ret i1 %C
}
define i1 @test18(i1 %C, i32 %a) {
; CHECK-LABEL: @test18(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 %C, label %endif, label %else
; CHECK: else:
; CHECK-NEXT: br label %endif
; CHECK: endif:
; CHECK-NEXT: ret i1 true
;
entry:
br i1 %C, label %endif, label %else
else:
br label %endif
endif:
%b.0 = phi i32 [ 0, %entry ], [ 1, %else ]
%tmp.4 = icmp slt i32 %b.0, 123
ret i1 %tmp.4
}
define i1 @test19(i1 %A, i1 %B) {
; CHECK-LABEL: @test19(
; CHECK-NEXT: [[TMP1:%.*]] = xor i1 %A, %B
; CHECK-NEXT: [[C:%.*]] = xor i1 [[TMP1]], true
; CHECK-NEXT: ret i1 [[C]]
;
%a = zext i1 %A to i32
%b = zext i1 %B to i32
%C = icmp eq i32 %a, %b
ret i1 %C
}
define i32 @test20(i32 %A) {
; CHECK-LABEL: @test20(
; CHECK-NEXT: [[B:%.*]] = and i32 %A, 1
; CHECK-NEXT: ret i32 [[B]]
;
%B = and i32 %A, 1
%C = icmp ne i32 %B, 0
%D = zext i1 %C to i32
ret i32 %D
}
define <2 x i32> @test20vec(<2 x i32> %A) {
; CHECK-LABEL: @test20vec(
; CHECK-NEXT: [[B:%.*]] = and <2 x i32> [[A:%.*]], <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i32> [[B]]
;
%B = and <2 x i32> %A, <i32 1, i32 1>
%C = icmp ne <2 x i32> %B, zeroinitializer
%D = zext <2 x i1> %C to <2 x i32>
ret <2 x i32> %D
}
define i32 @test21(i32 %a) {
; CHECK-LABEL: @test21(
; CHECK-NEXT: [[TMP_6:%.*]] = lshr i32 %a, 2
; CHECK-NEXT: [[TMP_6_LOBIT:%.*]] = and i32 [[TMP_6]], 1
; CHECK-NEXT: ret i32 [[TMP_6_LOBIT]]
;
%tmp.6 = and i32 %a, 4
%not.tmp.7 = icmp ne i32 %tmp.6, 0
%retval = zext i1 %not.tmp.7 to i32
ret i32 %retval
}
define <2 x i32> @test21vec(<2 x i32> %a) {
; CHECK-LABEL: @test21vec(
; CHECK-NEXT: [[TMP_6:%.*]] = lshr <2 x i32> [[A:%.*]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP_6_LOBIT:%.*]] = and <2 x i32> [[TMP_6]], <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i32> [[TMP_6_LOBIT]]
;
%tmp.6 = and <2 x i32> %a, <i32 4, i32 4>
%not.tmp.7 = icmp ne <2 x i32> %tmp.6, zeroinitializer
%retval = zext <2 x i1> %not.tmp.7 to <2 x i32>
ret <2 x i32> %retval
}
define i1 @test22(i32 %A, i32 %X) {
; CHECK-LABEL: @test22(
; CHECK-NEXT: ret i1 true
;
%B = and i32 %A, 100663295
%C = icmp ult i32 %B, 268435456
%Y = and i32 %X, 7
%Z = icmp sgt i32 %Y, -1
%R = or i1 %C, %Z
ret i1 %R
}
define i32 @test23(i32 %a) {
; CHECK-LABEL: @test23(
; CHECK-NEXT: [[TMP_1:%.*]] = and i32 %a, 1
; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[TMP_1]], 1
; CHECK-NEXT: ret i32 [[TMP1]]
;
%tmp.1 = and i32 %a, 1
%tmp.2 = icmp eq i32 %tmp.1, 0
%tmp.3 = zext i1 %tmp.2 to i32
ret i32 %tmp.3
}
define <2 x i32> @test23vec(<2 x i32> %a) {
; CHECK-LABEL: @test23vec(
; CHECK-NEXT: [[TMP_1:%.*]] = and <2 x i32> [[A:%.*]], <i32 1, i32 1>
; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i32> [[TMP_1]], <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i32> [[TMP1]]
;
%tmp.1 = and <2 x i32> %a, <i32 1, i32 1>
%tmp.2 = icmp eq <2 x i32> %tmp.1, zeroinitializer
%tmp.3 = zext <2 x i1> %tmp.2 to <2 x i32>
ret <2 x i32> %tmp.3
}
define i32 @test24(i32 %a) {
; CHECK-LABEL: @test24(
; CHECK-NEXT: [[TMP_1:%.*]] = lshr i32 %a, 2
; CHECK-NEXT: [[TMP_1_LOBIT:%.*]] = and i32 [[TMP_1]], 1
; CHECK-NEXT: [[TMP1:%.*]] = xor i32 [[TMP_1_LOBIT]], 1
; CHECK-NEXT: ret i32 [[TMP1]]
;
%tmp1 = and i32 %a, 4
%tmp.1 = lshr i32 %tmp1, 2
%tmp.2 = icmp eq i32 %tmp.1, 0
%tmp.3 = zext i1 %tmp.2 to i32
ret i32 %tmp.3
}
define <2 x i32> @test24vec(<2 x i32> %a) {
; CHECK-LABEL: @test24vec(
; CHECK-NEXT: [[TMP_1:%.*]] = lshr <2 x i32> [[A:%.*]], <i32 2, i32 2>
; CHECK-NEXT: [[TMP_1_LOBIT:%.*]] = and <2 x i32> [[TMP_1]], <i32 1, i32 1>
; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i32> [[TMP_1_LOBIT]], <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i32> [[TMP1]]
;
%tmp1 = and <2 x i32> %a, <i32 4, i32 4>
%tmp.1 = lshr <2 x i32> %tmp1, <i32 2, i32 2>
%tmp.2 = icmp eq <2 x i32> %tmp.1, zeroinitializer
%tmp.3 = zext <2 x i1> %tmp.2 to <2 x i32>
ret <2 x i32> %tmp.3
}
define i1 @test25(i32 %A) {
; CHECK-LABEL: @test25(
; CHECK-NEXT: ret i1 false
;
%B = and i32 %A, 2
%C = icmp ugt i32 %B, 2
ret i1 %C
}