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[Instcombine] precommit tests for icmp with intrinsic look through tr…
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…unc; NFC
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@bcl5980
bcl5980 committed Feb 6, 2023
1 parent 7dd974a commit defa9b8
Showing 1 changed file with 112 additions and 5 deletions.
117 changes: 112 additions & 5 deletions llvm/test/Transforms/InstCombine/cmp-intrinsic.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -116,7 +116,7 @@ define <2 x i1> @ctlz_ne_other_v2i32(<2 x i32> %a) {

define i1 @ctlz_eq_other_i32_multiuse(i32 %x, ptr %p) {
; CHECK-LABEL: @ctlz_eq_other_i32_multiuse(
; CHECK-NEXT: [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), [[RNG0:!range !.*]]
; CHECK-NEXT: [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range [[RNG0:![0-9]+]]
; CHECK-NEXT: store i32 [[LZ]], ptr [[P:%.*]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[LZ]], 24
; CHECK-NEXT: ret i1 [[CMP]]
Expand Down Expand Up @@ -169,7 +169,7 @@ define i1 @ctlz_ugt_other_i32(i32 %x) {

define i1 @ctlz_ugt_other_multiuse_i32(i32 %x, ptr %p) {
; CHECK-LABEL: @ctlz_ugt_other_multiuse_i32(
; CHECK-NEXT: [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), [[RNG0]]
; CHECK-NEXT: [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range [[RNG0]]
; CHECK-NEXT: store i32 [[LZ]], ptr [[P:%.*]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[X]], 32768
; CHECK-NEXT: ret i1 [[CMP]]
Expand Down Expand Up @@ -329,7 +329,7 @@ define <2 x i1> @cttz_ne_other_v2i32(<2 x i32> %a) {

define i1 @cttz_eq_other_i33_multiuse(i33 %x, ptr %p) {
; CHECK-LABEL: @cttz_eq_other_i33_multiuse(
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), [[RNG1:!range !.*]]
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range [[RNG1:![0-9]+]]
; CHECK-NEXT: store i33 [[TZ]], ptr [[P:%.*]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i33 [[TZ]], 4
; CHECK-NEXT: ret i1 [[CMP]]
Expand Down Expand Up @@ -375,7 +375,7 @@ define i1 @cttz_ugt_other_i33(i33 %x) {

define i1 @cttz_ugt_other_multiuse_i33(i33 %x, ptr %p) {
; CHECK-LABEL: @cttz_ugt_other_multiuse_i33(
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), [[RNG1]]
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range [[RNG1]]
; CHECK-NEXT: store i33 [[TZ]], ptr [[P:%.*]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i33 [[TZ]], 16
; CHECK-NEXT: ret i1 [[CMP]]
Expand Down Expand Up @@ -493,7 +493,7 @@ define <2 x i1> @ctpop_ne_bitwidth_v2i32(<2 x i32> %x) {

define i1 @ctpop_ugt_bitwidth_minus_one_i8(i8 %x, ptr %p) {
; CHECK-LABEL: @ctpop_ugt_bitwidth_minus_one_i8(
; CHECK-NEXT: [[POP:%.*]] = tail call i8 @llvm.ctpop.i8(i8 [[X:%.*]]), [[RNG2:!range !.*]]
; CHECK-NEXT: [[POP:%.*]] = tail call i8 @llvm.ctpop.i8(i8 [[X:%.*]]), !range [[RNG2:![0-9]+]]
; CHECK-NEXT: store i8 [[POP]], ptr [[P:%.*]], align 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[X]], -1
; CHECK-NEXT: ret i1 [[CMP]]
Expand All @@ -513,3 +513,110 @@ define <2 x i1> @ctpop_ult_bitwidth_v2i32(<2 x i32> %x) {
%cmp = icmp ult <2 x i32> %pop, <i32 32, i32 32>
ret <2 x i1> %cmp
}

define i1 @trunc_cttz_eq_other_i33_i15(i33 %x) {
; CHECK-LABEL: @trunc_cttz_eq_other_i33_i15(
; CHECK-NEXT: [[TMP1:%.*]] = and i33 [[X:%.*]], 31
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i33 [[TMP1]], 16
; CHECK-NEXT: ret i1 [[CMP]]
;
%tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
%trunc = trunc i33 %tz to i15
%cmp = icmp eq i15 %trunc, 4
ret i1 %cmp
}

define i1 @trunc_cttz_ugt_other_i33_i15(i33 %x) {
; CHECK-LABEL: @trunc_cttz_ugt_other_i33_i15(
; CHECK-NEXT: [[TMP1:%.*]] = and i33 [[X:%.*]], 15
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i33 [[TMP1]], 0
; CHECK-NEXT: ret i1 [[CMP]]
;
%tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
%trunc = trunc i33 %tz to i15
%cmp = icmp ugt i15 %trunc, 3
ret i1 %cmp
}

define i1 @trunc_cttz_ult_other_i33_i15(i33 %x) {
; CHECK-LABEL: @trunc_cttz_ult_other_i33_i15(
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range [[RNG1]]
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i33 [[TZ]] to i15
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i15 [[TRUNC]], 7
; CHECK-NEXT: ret i1 [[CMP]]
;
%tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
%trunc = trunc i33 %tz to i15
%cmp = icmp ult i15 %trunc, 7
ret i1 %cmp
}

define i1 @trunc_ctlz_ugt_zero_i32(i32 %x) {
; CHECK-LABEL: @trunc_ctlz_ugt_zero_i32(
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[X:%.*]], -1
; CHECK-NEXT: ret i1 [[CMP]]
;
%lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
%trunc = trunc i32 %lz to i15
%cmp = icmp ugt i15 %trunc, 0
ret i1 %cmp
}

define i1 @trunc_ctlz_ugt_one_i32(i32 %x) {
; CHECK-LABEL: @trunc_ctlz_ugt_one_i32(
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[X:%.*]], 1073741824
; CHECK-NEXT: ret i1 [[CMP]]
;
%lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
%trunc = trunc i32 %lz to i15
%cmp = icmp ugt i15 %trunc, 1
ret i1 %cmp
}

define i1 @trunc_ctlz_ugt_other_i32(i32 %x) {
; CHECK-LABEL: @trunc_ctlz_ugt_other_i32(
; CHECK-NEXT: [[LZ:%.*]] = tail call i32 @llvm.ctlz.i32(i32 [[X:%.*]], i1 false), !range [[RNG0]]
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i32 [[LZ]] to i15
; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i15 [[TRUNC]], 4
; CHECK-NEXT: ret i1 [[CMP]]
;
%lz = tail call i32 @llvm.ctlz.i32(i32 %x, i1 false)
%trunc = trunc i32 %lz to i15
%cmp = icmp ugt i15 %trunc, 4
ret i1 %cmp
}

define i1 @trunc_ctpop_eq_zero_i11(i11 %x) {
; CHECK-LABEL: @trunc_ctpop_eq_zero_i11(
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i11 [[X:%.*]], 0
; CHECK-NEXT: ret i1 [[CMP]]
;
%pop = tail call i11 @llvm.ctpop.i11(i11 %x)
%trunc = trunc i11 %pop to i5
%cmp = icmp eq i5 %trunc, 0
ret i1 %cmp
}

define i1 @trunc_ctpop_eq_bitwidth_i8(i8 %x) {
; CHECK-LABEL: @trunc_ctpop_eq_bitwidth_i8(
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[X:%.*]], -1
; CHECK-NEXT: ret i1 [[CMP]]
;
%pop = tail call i8 @llvm.ctpop.i8(i8 %x)
%trunc = trunc i8 %pop to i5
%cmp = icmp eq i5 %trunc, 8
ret i1 %cmp
}

define i1 @trunc_negative_destbits_not_enough(i33 %x) {
; CHECK-LABEL: @trunc_negative_destbits_not_enough(
; CHECK-NEXT: [[TZ:%.*]] = tail call i33 @llvm.cttz.i33(i33 [[X:%.*]], i1 false), !range [[RNG1]]
; CHECK-NEXT: [[TRUNC:%.*]] = trunc i33 [[TZ]] to i4
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i4 [[TRUNC]], 7
; CHECK-NEXT: ret i1 [[CMP]]
;
%tz = tail call i33 @llvm.cttz.i33(i33 %x, i1 false)
%trunc = trunc i33 %tz to i4
%cmp = icmp ult i4 %trunc, 7
ret i1 %cmp
}

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