test/Transforms/InstCombine/icmp-trunc.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S -data-layout="n8:16:32:64" | FileCheck %s --check-prefixes=CHECK,DL64
; RUN: opt < %s -passes=instcombine -S -data-layout="n8"          | FileCheck %s --check-prefixes=CHECK,DL8

declare void @use(i8)

define i1 @ult_2(i32 %x) {
; CHECK-LABEL: @ult_2(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 254
; CHECK-NEXT:    [[R:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ult i8 %t, 2
  ret i1 %r
}

define <2 x i1> @ult_16_splat(<2 x i16> %x) {
; CHECK-LABEL: @ult_16_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 2032, i16 2032>
; CHECK-NEXT:    [[R:%.*]] = icmp eq <2 x i16> [[TMP1]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp ult <2 x i11> %t, <i11 16, i11 16>
  ret <2 x i1> %r
}

; negative test - need power-of-2 constant

define i1 @ult_3(i32 %x) {
; CHECK-LABEL: @ult_3(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp ult i8 [[T]], 3
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ult i8 %t, 3
  ret i1 %r
}

; negative test - no extra use allowed

define i1 @ult_2_use(i32 %x) {
; CHECK-LABEL: @ult_2_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp ult i8 [[T]], 2
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp ult i8 %t, 2
  ret i1 %r
}

@a = internal unnamed_addr constant [3 x i32] [i32 0, i32 0, i32 1], align 4

define i1 @PR52260(i32 %x) {
; CHECK-LABEL: @PR52260(
; CHECK-NEXT:    ret i1 true
;
  %idxprom = sext i32 %x to i64
  %idx = getelementptr inbounds [3 x i32], ptr @a, i64 0, i64 %idxprom
  %t1 = load i32, ptr %idx, align 4
  %conv1 = lshr i32 %t1, 1
  %t2 = trunc i32 %conv1 to i8
  %conv2 = and i8 %t2, 127
  %tobool = icmp eq i8 %conv2, 0
  ret i1 %tobool
}

define i1 @ult_192(i32 %x) {
; CHECK-LABEL: @ult_192(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 192
; CHECK-NEXT:    [[R:%.*]] = icmp ne i32 [[TMP1]], 192
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ult i8 %t, 192 ; 0b1100_0000
  ret i1 %r
}

define <2 x i1> @ult_2044_splat(<2 x i16> %x) {
; CHECK-LABEL: @ult_2044_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 2044, i16 2044>
; CHECK-NEXT:    [[R:%.*]] = icmp ne <2 x i16> [[TMP1]], <i16 2044, i16 2044>
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp ult <2 x i11> %t, <i11 2044, i11 2044> ; 0b111_1111_1100
  ret <2 x i1> %r
}

; negative test - need high-bit-mask constant

define i1 @ult_96(i32 %x) {
; CHECK-LABEL: @ult_96(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp ult i8 [[T]], 96
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ult i8 %t, 96  ; 0b0110_0000
  ret i1 %r
}

; negative test - no extra use allowed

define i1 @ult_192_use(i32 %x) {
; CHECK-LABEL: @ult_192_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp ult i8 [[T]], -64
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp ult i8 %t, 192
  ret i1 %r
}

define i1 @ugt_3(i32 %x) {
; CHECK-LABEL: @ugt_3(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 252
; CHECK-NEXT:    [[R:%.*]] = icmp ne i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ugt i8 %t, 3
  ret i1 %r
}

define <2 x i1> @ugt_7_splat(<2 x i16> %x) {
; CHECK-LABEL: @ugt_7_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 2040, i16 2040>
; CHECK-NEXT:    [[R:%.*]] = icmp ne <2 x i16> [[TMP1]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp ugt <2 x i11> %t, <i11 7, i11 7>
  ret <2 x i1> %r
}

; negative test - need low-bit-mask constant

define i1 @ugt_4(i32 %x) {
; CHECK-LABEL: @ugt_4(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i8 [[T]], 4
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ugt i8 %t, 4
  ret i1 %r
}

; negative test - no extra use allowed

define i1 @ugt_3_use(i32 %x) {
; CHECK-LABEL: @ugt_3_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i8 [[T]], 3
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp ugt i8 %t, 3
  ret i1 %r
}

define i1 @ugt_253(i32 %x) {
; CHECK-LABEL: @ugt_253(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 254
; CHECK-NEXT:    [[R:%.*]] = icmp eq i32 [[TMP1]], 254
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ugt i8 %t, 253
  ret i1 %r
}

define <2 x i1> @ugt_2043_splat(<2 x i16> %x) {
; CHECK-LABEL: @ugt_2043_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 2044, i16 2044>
; CHECK-NEXT:    [[R:%.*]] = icmp eq <2 x i16> [[TMP1]], <i16 2044, i16 2044>
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp ugt <2 x i11> %t, <i11 2043, i11 2043> ; 0b111_1111_101
  ret <2 x i1> %r
}

; negative test - need not-of-power-of-2 constant

define i1 @ugt_252(i32 %x) {
; CHECK-LABEL: @ugt_252(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i8 [[T]], -4
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp ugt i8 %t, 252
  ret i1 %r
}

; negative test - no extra use allowed

define i1 @ugt_253_use(i32 %x) {
; CHECK-LABEL: @ugt_253_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i8 [[T]], -3
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp ugt i8 %t, 253
  ret i1 %r
}

define i1 @slt_0(i32 %x) {
; CHECK-LABEL: @slt_0(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 128
; CHECK-NEXT:    [[R:%.*]] = icmp ne i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp slt i8 %t, 0
  ret i1 %r
}

define <2 x i1> @slt_0_splat(<2 x i16> %x) {
; CHECK-LABEL: @slt_0_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 1024, i16 1024>
; CHECK-NEXT:    [[R:%.*]] = icmp ne <2 x i16> [[TMP1]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp slt <2 x i11> %t, zeroinitializer
  ret <2 x i1> %r
}

define i1 @slt_1(i32 %x) {
; CHECK-LABEL: @slt_1(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp slt i8 [[T]], 1
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp slt i8 %t, 1
  ret i1 %r
}

define i1 @slt_0_use(i32 %x) {
; CHECK-LABEL: @slt_0_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp slt i8 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp slt i8 %t, 0
  ret i1 %r
}

define i1 @sgt_n1(i32 %x) {
; CHECK-LABEL: @sgt_n1(
; CHECK-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 128
; CHECK-NEXT:    [[R:%.*]] = icmp eq i32 [[TMP1]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp sgt i8 %t, -1
  ret i1 %r
}

define <2 x i1> @sgt_n1_splat(<2 x i16> %x) {
; CHECK-LABEL: @sgt_n1_splat(
; CHECK-NEXT:    [[TMP1:%.*]] = and <2 x i16> [[X:%.*]], <i16 1024, i16 1024>
; CHECK-NEXT:    [[R:%.*]] = icmp eq <2 x i16> [[TMP1]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i16> %x to <2 x i11>
  %r = icmp sgt <2 x i11> %t, <i11 -1, i11 -1>
  ret <2 x i1> %r
}

define i1 @sgt_0(i32 %x) {
; CHECK-LABEL: @sgt_0(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    [[R:%.*]] = icmp sgt i8 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp sgt i8 %t, 0
  ret i1 %r
}

define i1 @sgt_n1_use(i32 %x) {
; CHECK-LABEL: @sgt_n1_use(
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp sgt i8 [[T]], -1
; CHECK-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  call void @use(i8 %t)
  %r = icmp sgt i8 %t, -1
  ret i1 %r
}

define i1 @trunc_eq_i32_i8(i32 %x) {
; DL64-LABEL: @trunc_eq_i32_i8(
; DL64-NEXT:    [[TMP1:%.*]] = and i32 [[X:%.*]], 255
; DL64-NEXT:    [[R:%.*]] = icmp eq i32 [[TMP1]], 42
; DL64-NEXT:    ret i1 [[R]]
;
; DL8-LABEL: @trunc_eq_i32_i8(
; DL8-NEXT:    [[T:%.*]] = trunc i32 [[X:%.*]] to i8
; DL8-NEXT:    [[R:%.*]] = icmp eq i8 [[T]], 42
; DL8-NEXT:    ret i1 [[R]]
;
  %t = trunc i32 %x to i8
  %r = icmp eq i8 %t, 42
  ret i1 %r
}

define <2 x i1> @trunc_eq_v2i32_v2i8(<2 x i32> %x) {
; CHECK-LABEL: @trunc_eq_v2i32_v2i8(
; CHECK-NEXT:    [[T:%.*]] = trunc <2 x i32> [[X:%.*]] to <2 x i8>
; CHECK-NEXT:    [[R:%.*]] = icmp eq <2 x i8> [[T]], <i8 42, i8 42>
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %t = trunc <2 x i32> %x to <2 x i8>
  %r = icmp eq <2 x i8> %t, <i8 42, i8 42>
  ret <2 x i1> %r
}

define i1 @trunc_ne_i64_i10(i64 %x) {
; DL64-LABEL: @trunc_ne_i64_i10(
; DL64-NEXT:    [[TMP1:%.*]] = and i64 [[X:%.*]], 1023
; DL64-NEXT:    [[R:%.*]] = icmp eq i64 [[TMP1]], 42
; DL64-NEXT:    ret i1 [[R]]
;
; DL8-LABEL: @trunc_ne_i64_i10(
; DL8-NEXT:    [[T:%.*]] = trunc i64 [[X:%.*]] to i10
; DL8-NEXT:    [[R:%.*]] = icmp eq i10 [[T]], 42
; DL8-NEXT:    ret i1 [[R]]
;
  %t = trunc i64 %x to i10
  %r = icmp eq i10 %t, 42
  ret i1 %r
}

define i1 @shl1_trunc_eq0(i32 %a) {
; CHECK-LABEL: @shl1_trunc_eq0(
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i32 [[A:%.*]], 15
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i32 1, %a
  %t = trunc i32 %shl to i16
  %r = icmp eq i16 %t, 0
  ret i1 %r
}

define <2 x i1> @shl1_trunc_ne0(<2 x i8> %a) {
; CHECK-LABEL: @shl1_trunc_ne0(
; CHECK-NEXT:    [[R:%.*]] = icmp ult <2 x i8> [[A:%.*]], <i8 5, i8 5>
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %shl = shl <2 x i8> <i8 1, i8 poison>, %a
  %t = trunc <2 x i8> %shl to <2 x i5>
  %r = icmp ne <2 x i5> %t, zeroinitializer
  ret <2 x i1> %r
}

define i1 @shl1_trunc_eq0_use1(i8 %a) {
; CHECK-LABEL: @shl1_trunc_eq0_use1(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i8 1, [[A:%.*]]
; CHECK-NEXT:    call void @use(i8 [[SHL]])
; CHECK-NEXT:    [[R:%.*]] = icmp ugt i8 [[A]], 5
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i8 1, %a
  call void @use(i8 %shl)
  %t = trunc i8 %shl to i6
  %r = icmp eq i6 %t, 0
  ret i1 %r
}

define i1 @shl1_trunc_ne0_use2(i37 %a) {
; CHECK-LABEL: @shl1_trunc_ne0_use2(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i37 1, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i37 [[SHL]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp ult i37 [[A]], 8
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i37 1, %a
  %t = trunc i37 %shl to i8
  call void @use(i8 %t)
  %r = icmp ne i8 %t, 0
  ret i1 %r
}

; TODO: A > 4

define i1 @shl2_trunc_eq0(i9 %a) {
; CHECK-LABEL: @shl2_trunc_eq0(
; CHECK-NEXT:    [[SHL:%.*]] = shl i9 2, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i9 [[SHL]] to i6
; CHECK-NEXT:    [[R:%.*]] = icmp eq i6 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i9 2, %a
  %t = trunc i9 %shl to i6
  %r = icmp eq i6 %t, 0
  ret i1 %r
}

define i1 @shl2_trunc_ne0(i9 %a) {
; CHECK-LABEL: @shl2_trunc_ne0(
; CHECK-NEXT:    [[SHL:%.*]] = shl i9 2, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i9 [[SHL]] to i6
; CHECK-NEXT:    [[R:%.*]] = icmp ne i6 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i9 2, %a
  %t = trunc i9 %shl to i6
  %r = icmp ne i6 %t, 0
  ret i1 %r
}

define i1 @shl3_trunc_eq0(i9 %a) {
; CHECK-LABEL: @shl3_trunc_eq0(
; CHECK-NEXT:    [[SHL:%.*]] = shl i9 3, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i9 [[SHL]] to i6
; CHECK-NEXT:    [[R:%.*]] = icmp eq i6 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i9 3, %a
  %t = trunc i9 %shl to i6
  %r = icmp eq i6 %t, 0
  ret i1 %r
}

define <2 x i1> @shl4_trunc_ne0(<2 x i8> %a) {
; CHECK-LABEL: @shl4_trunc_ne0(
; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i8> <i8 4, i8 poison>, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc <2 x i8> [[SHL]] to <2 x i5>
; CHECK-NEXT:    [[R:%.*]] = icmp ne <2 x i5> [[T]], zeroinitializer
; CHECK-NEXT:    ret <2 x i1> [[R]]
;
  %shl = shl <2 x i8> <i8 4, i8 poison>, %a
  %t = trunc <2 x i8> %shl to <2 x i5>
  %r = icmp ne <2 x i5> %t, zeroinitializer
  ret <2 x i1> %r
}


; TODO: A < 5

define i1 @shl1_trunc_sgt0(i9 %a) {
; CHECK-LABEL: @shl1_trunc_sgt0(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i9 1, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i9 [[SHL]] to i6
; CHECK-NEXT:    [[R:%.*]] = icmp sgt i6 [[T]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i9 1, %a
  %t = trunc i9 %shl to i6
  %r = icmp sgt i6 %t, 0
  ret i1 %r
}

define i1 @shl1_trunc_eq1(i64 %a) {
; CHECK-LABEL: @shl1_trunc_eq1(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i64 1, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i64 [[SHL]] to i8
; CHECK-NEXT:    call void @use(i8 [[T]])
; CHECK-NEXT:    [[R:%.*]] = icmp eq i64 [[A]], 0
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i64 1, %a
  %t = trunc i64 %shl to i8
  call void @use(i8 %t)
  %r = icmp eq i8 %t, 1
  ret i1 %r
}

define i1 @shl1_trunc_ne32(i8 %a) {
; CHECK-LABEL: @shl1_trunc_ne32(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i8 1, [[A:%.*]]
; CHECK-NEXT:    call void @use(i8 [[SHL]])
; CHECK-NEXT:    [[R:%.*]] = icmp ne i8 [[A]], 5
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i8 1, %a
  call void @use(i8 %shl)
  %t = trunc i8 %shl to i6
  %r = icmp ne i6 %t, 32
  ret i1 %r
}

define i1 @shl2_trunc_eq8_i32(i32 %a) {
; DL64-LABEL: @shl2_trunc_eq8_i32(
; DL64-NEXT:    [[SHL:%.*]] = shl i32 2, [[A:%.*]]
; DL64-NEXT:    [[TMP1:%.*]] = and i32 [[SHL]], 65534
; DL64-NEXT:    [[R:%.*]] = icmp eq i32 [[TMP1]], 8
; DL64-NEXT:    ret i1 [[R]]
;
; DL8-LABEL: @shl2_trunc_eq8_i32(
; DL8-NEXT:    [[SHL:%.*]] = shl i32 2, [[A:%.*]]
; DL8-NEXT:    [[T:%.*]] = trunc i32 [[SHL]] to i16
; DL8-NEXT:    [[R:%.*]] = icmp eq i16 [[T]], 8
; DL8-NEXT:    ret i1 [[R]]
;
  %shl = shl i32 2, %a
  %t = trunc i32 %shl to i16
  %r = icmp eq i16 %t, 8
  ret i1 %r
}

define i1 @shl2_trunc_ne8_i32(i32 %a) {
; DL64-LABEL: @shl2_trunc_ne8_i32(
; DL64-NEXT:    [[SHL:%.*]] = shl i32 2, [[A:%.*]]
; DL64-NEXT:    [[TMP1:%.*]] = and i32 [[SHL]], 65534
; DL64-NEXT:    [[R:%.*]] = icmp ne i32 [[TMP1]], 8
; DL64-NEXT:    ret i1 [[R]]
;
; DL8-LABEL: @shl2_trunc_ne8_i32(
; DL8-NEXT:    [[SHL:%.*]] = shl i32 2, [[A:%.*]]
; DL8-NEXT:    [[T:%.*]] = trunc i32 [[SHL]] to i16
; DL8-NEXT:    [[R:%.*]] = icmp ne i16 [[T]], 8
; DL8-NEXT:    ret i1 [[R]]
;
  %shl = shl i32 2, %a
  %t = trunc i32 %shl to i16
  %r = icmp ne i16 %t, 8
  ret i1 %r
}

define i1 @shl1_trunc_sgt4(i32 %a) {
; CHECK-LABEL: @shl1_trunc_sgt4(
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw i32 1, [[A:%.*]]
; CHECK-NEXT:    [[T:%.*]] = trunc i32 [[SHL]] to i16
; CHECK-NEXT:    [[R:%.*]] = icmp sgt i16 [[T]], 4
; CHECK-NEXT:    ret i1 [[R]]
;
  %shl = shl i32 1, %a
  %t = trunc i32 %shl to i16
  %r = icmp sgt i16 %t, 4
  ret i1 %r
}