icmp-mul.ll
5.94 KB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
; Tests for slt/ult
define i1 @slt_positive_multip_rem_zero(i8 %x) {
; CHECK-LABEL: @slt_positive_multip_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, 7
%b = icmp slt i8 %a, 21
ret i1 %b
}
define i1 @slt_negative_multip_rem_zero(i8 %x) {
; CHECK-LABEL: @slt_negative_multip_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7
; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, -7
%b = icmp slt i8 %a, 21
ret i1 %b
}
define i1 @slt_positive_multip_rem_nz(i8 %x) {
; CHECK-LABEL: @slt_positive_multip_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp slt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, 5
%b = icmp slt i8 %a, 21
ret i1 %b
}
define i1 @ult_rem_zero(i8 %x) {
; CHECK-LABEL: @ult_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 7
%b = icmp ult i8 %a, 21
ret i1 %b
}
define i1 @ult_rem_nz(i8 %x) {
; CHECK-LABEL: @ult_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp ult i8 %a, 21
ret i1 %b
}
; Tests for sgt/ugt
define i1 @sgt_positive_multip_rem_zero(i8 %x) {
; CHECK-LABEL: @sgt_positive_multip_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, 7
%b = icmp sgt i8 %a, 21
ret i1 %b
}
define i1 @sgt_negative_multip_rem_zero(i8 %x) {
; CHECK-LABEL: @sgt_negative_multip_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], -7
; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, -7
%b = icmp sgt i8 %a, 21
ret i1 %b
}
define i1 @sgt_positive_multip_rem_nz(i8 %x) {
; CHECK-LABEL: @sgt_positive_multip_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, 5
%b = icmp sgt i8 %a, 21
ret i1 %b
}
define i1 @ugt_rem_zero(i8 %x) {
; CHECK-LABEL: @ugt_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 7
%b = icmp ugt i8 %a, 21
ret i1 %b
}
define i1 @ugt_rem_nz(i8 %x) {
; CHECK-LABEL: @ugt_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp ugt i8 %a, 21
ret i1 %b
}
; Tests for eq/ne
define i1 @eq_rem_zero(i8 %x) {
; CHECK-LABEL: @eq_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 20
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp eq i8 %a, 20
ret i1 %b
}
define i1 @ne_rem_zero(i8 %x) {
; CHECK-LABEL: @ne_rem_zero(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 30
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp ne i8 %a, 30
ret i1 %b
}
define i1 @eq_rem_nz(i8 %x) {
; CHECK-LABEL: @eq_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 31
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp eq i8 %a, 31
ret i1 %b
}
define i1 @ne_rem_nz(i8 %x) {
; CHECK-LABEL: @ne_rem_nz(
; CHECK-NEXT: [[A:%.*]] = mul nuw i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 31
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nuw i8 %x, 5
%b = icmp ne i8 %a, 31
ret i1 %b
}
; Negative tests for the icmp mul folds
define i1 @sgt_positive_multip_rem_zero_nonsw(i8 %x) {
; CHECK-LABEL: @sgt_positive_multip_rem_zero_nonsw(
; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp sgt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 7
%b = icmp sgt i8 %a, 21
ret i1 %b
}
define i1 @ult_multip_rem_zero_nonsw(i8 %x) {
; CHECK-LABEL: @ult_multip_rem_zero_nonsw(
; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp ult i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 7
%b = icmp ult i8 %a, 21
ret i1 %b
}
define i1 @ugt_rem_zero_nonuw(i8 %x) {
; CHECK-LABEL: @ugt_rem_zero_nonuw(
; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp ugt i8 [[A]], 21
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 7
%b = icmp ugt i8 %a, 21
ret i1 %b
}
define i1 @sgt_minnum(i8 %x) {
; CHECK-LABEL: @sgt_minnum(
; CHECK-NEXT: [[A:%.*]] = mul nsw i8 [[X:%.*]], 7
; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], -128
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul nsw i8 %x, 7
%b = icmp sgt i8 %a, -128
ret i1 %b
}
define i1 @ule_bignum(i8 %x) {
; CHECK-LABEL: @ule_bignum(
; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[X:%.*]], 0
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 2147483647
%b = icmp ule i8 %a, 0
ret i1 %b
}
define i1 @sgt_mulzero(i8 %x) {
; CHECK-LABEL: @sgt_mulzero(
; CHECK-NEXT: ret i1 false
;
%a = mul nsw i8 %x, 0
%b = icmp sgt i8 %a, 21
ret i1 %b
}
define i1 @eq_rem_zero_nonuw(i8 %x) {
; CHECK-LABEL: @eq_rem_zero_nonuw(
; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp eq i8 [[A]], 20
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 5
%b = icmp eq i8 %a, 20
ret i1 %b
}
define i1 @ne_rem_zero_nonuw(i8 %x) {
; CHECK-LABEL: @ne_rem_zero_nonuw(
; CHECK-NEXT: [[A:%.*]] = mul i8 [[X:%.*]], 5
; CHECK-NEXT: [[B:%.*]] = icmp ne i8 [[A]], 30
; CHECK-NEXT: ret i1 [[B]]
;
%a = mul i8 %x, 5
%b = icmp ne i8 %a, 30
ret i1 %b
}