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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare void @use19(i19)
declare void @use12(i12)
declare void @use2(i2)
define i32 @add_or_sub_comb_i32_commuted1_nuw(i32 %x) {
; CHECK-LABEL: @add_or_sub_comb_i32_commuted1_nuw(
; CHECK-NEXT: ret i32 [[X:%.*]]
;
%sub = sub i32 0, %x
%or = or i32 %sub, %x
%add = add nuw i32 %or, %x
ret i32 %add
}
define i8 @add_or_sub_comb_i8_commuted2_nsw(i8 %p) {
; CHECK-LABEL: @add_or_sub_comb_i8_commuted2_nsw(
; CHECK-NEXT: [[X:%.*]] = mul i8 [[P:%.*]], [[P]]
; CHECK-NEXT: [[TMP1:%.*]] = add nsw i8 [[X]], -1
; CHECK-NEXT: [[ADD:%.*]] = and i8 [[TMP1]], [[X]]
; CHECK-NEXT: ret i8 [[ADD]]
;
%x = mul i8 %p, %p ; thwart complexity-based canonicalization
%sub = sub i8 0, %x
%or = or i8 %sub, %x
%add = add nsw i8 %x, %or
ret i8 %add
}
define i128 @add_or_sub_comb_i128_commuted3_nuw_nsw(i128 %p) {
; CHECK-LABEL: @add_or_sub_comb_i128_commuted3_nuw_nsw(
; CHECK-NEXT: [[X:%.*]] = mul i128 [[P:%.*]], [[P]]
; CHECK-NEXT: ret i128 [[X]]
;
%x = mul i128 %p, %p ; thwart complexity-based canonicalization
%sub = sub i128 0, %x
%or = or i128 %x, %sub
%add = add nuw nsw i128 %or, %x
ret i128 %add
}
define i64 @add_or_sub_comb_i64_commuted4(i64 %p) {
; CHECK-LABEL: @add_or_sub_comb_i64_commuted4(
; CHECK-NEXT: [[X:%.*]] = mul i64 [[P:%.*]], [[P]]
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[X]], -1
; CHECK-NEXT: [[ADD:%.*]] = and i64 [[TMP1]], [[X]]
; CHECK-NEXT: ret i64 [[ADD]]
;
%x = mul i64 %p, %p ; thwart complexity-based canonicalization
%sub = sub i64 0, %x
%or = or i64 %x, %sub
%add = add i64 %x, %or
ret i64 %add
}
define <3 x i32> @add_or_sub_comb_i32vec(<3 x i32> %p) {
; CHECK-LABEL: @add_or_sub_comb_i32vec(
; CHECK-NEXT: [[X:%.*]] = mul <3 x i32> [[P:%.*]], [[P]]
; CHECK-NEXT: [[TMP1:%.*]] = add <3 x i32> [[X]], <i32 -1, i32 -1, i32 -1>
; CHECK-NEXT: [[ADD:%.*]] = and <3 x i32> [[TMP1]], [[X]]
; CHECK-NEXT: ret <3 x i32> [[ADD]]
;
%x = mul <3 x i32> %p, %p ; thwart complexity-based canonicalization
%sub = sub <3 x i32> <i32 0, i32 0, i32 0>, %x
%or = or <3 x i32> %sub, %x
%add = add <3 x i32> %or, %x
ret <3 x i32> %add
}
define <4 x i16> @add_or_sub_comb_i32vec_poison(<4 x i16> %p) {
; CHECK-LABEL: @add_or_sub_comb_i32vec_poison(
; CHECK-NEXT: [[X:%.*]] = mul <4 x i16> [[P:%.*]], [[P]]
; CHECK-NEXT: [[TMP1:%.*]] = add <4 x i16> [[X]], <i16 -1, i16 -1, i16 -1, i16 -1>
; CHECK-NEXT: [[ADD:%.*]] = and <4 x i16> [[TMP1]], [[X]]
; CHECK-NEXT: ret <4 x i16> [[ADD]]
;
%x = mul <4 x i16> %p, %p ; thwart complexity-based canonicalization
%sub = sub <4 x i16> <i16 0, i16 poison, i16 poison, i16 0>, %x
%or = or <4 x i16> %sub, %x
%add = add <4 x i16> %or, %x
ret <4 x i16> %add
}
define i12 @add_or_sub_comb_i12_multiuse_only_sub(i12 %p) {
; CHECK-LABEL: @add_or_sub_comb_i12_multiuse_only_sub(
; CHECK-NEXT: [[X:%.*]] = mul i12 [[P:%.*]], [[P]]
; CHECK-NEXT: [[SUB:%.*]] = sub i12 0, [[X]]
; CHECK-NEXT: call void @use12(i12 [[SUB]])
; CHECK-NEXT: [[TMP1:%.*]] = add i12 [[X]], -1
; CHECK-NEXT: [[ADD:%.*]] = and i12 [[TMP1]], [[X]]
; CHECK-NEXT: ret i12 [[ADD]]
;
%x = mul i12 %p, %p ; thwart complexity-based canonicalization
%sub = sub i12 0, %x
call void @use12(i12 %sub) ; extra use of sub
%or = or i12 %sub, %x
%add = add i12 %or, %x
ret i12 %add
}
define i8 @add_or_sub_comb_i8_negative_y_sub(i8 %x, i8 %y) {
; CHECK-LABEL: @add_or_sub_comb_i8_negative_y_sub(
; CHECK-NEXT: [[SUB:%.*]] = sub i8 0, [[Y:%.*]]
; CHECK-NEXT: [[OR:%.*]] = or i8 [[SUB]], [[X:%.*]]
; CHECK-NEXT: [[ADD:%.*]] = add i8 [[OR]], [[X]]
; CHECK-NEXT: ret i8 [[ADD]]
;
%sub = sub i8 0, %y ; mismatch: y instead of x
%or = or i8 %sub, %x
%add = add i8 %or, %x
ret i8 %add
}
define i8 @add_or_sub_comb_i8_negative_y_or(i8 %x, i8 %y) {
; CHECK-LABEL: @add_or_sub_comb_i8_negative_y_or(
; CHECK-NEXT: [[SUB:%.*]] = sub i8 0, [[X:%.*]]
; CHECK-NEXT: [[OR:%.*]] = or i8 [[SUB]], [[Y:%.*]]
; CHECK-NEXT: [[ADD:%.*]] = add i8 [[OR]], [[X]]
; CHECK-NEXT: ret i8 [[ADD]]
;
%sub = sub i8 0, %x
%or = or i8 %sub, %y ; mismatch: y instead of x
%add = add i8 %or, %x
ret i8 %add
}
define i8 @add_or_sub_comb_i8_negative_y_add(i8 %x, i8 %y) {
; CHECK-LABEL: @add_or_sub_comb_i8_negative_y_add(
; CHECK-NEXT: [[SUB:%.*]] = sub i8 0, [[X:%.*]]
; CHECK-NEXT: [[OR:%.*]] = or i8 [[SUB]], [[X]]
; CHECK-NEXT: [[ADD:%.*]] = add i8 [[OR]], [[Y:%.*]]
; CHECK-NEXT: ret i8 [[ADD]]
;
%sub = sub i8 0, %x
%or = or i8 %sub, %x
%add = add i8 %or, %y ; mismatch: y instead of x
ret i8 %add
}
define i8 @add_or_sub_comb_i8_negative_xor_instead_or(i8 %x) {
; CHECK-LABEL: @add_or_sub_comb_i8_negative_xor_instead_or(
; CHECK-NEXT: [[SUB:%.*]] = sub i8 0, [[X:%.*]]
; CHECK-NEXT: [[XOR:%.*]] = xor i8 [[SUB]], [[X]]
; CHECK-NEXT: [[ADD:%.*]] = add i8 [[XOR]], [[X]]
; CHECK-NEXT: ret i8 [[ADD]]
;
%sub = sub i8 0, %x
%xor = xor i8 %sub, %x ; mismatch: xor instead of or
%add = add i8 %xor, %x
ret i8 %add
}
define i16 @add_or_sub_comb_i16_negative_sub_no_negate(i16 %x) {
; CHECK-LABEL: @add_or_sub_comb_i16_negative_sub_no_negate(
; CHECK-NEXT: [[SUB:%.*]] = sub i16 1, [[X:%.*]]
; CHECK-NEXT: [[OR:%.*]] = or i16 [[SUB]], [[X]]
; CHECK-NEXT: [[ADD:%.*]] = add i16 [[OR]], [[X]]
; CHECK-NEXT: ret i16 [[ADD]]
;
%sub = sub i16 1, %x ; mismatch: sub isn't a negate
%or = or i16 %sub, %x
%add = add i16 %or, %x
ret i16 %add
}
define i2 @add_or_sub_comb_i2_negative_multiuse_only_or(i2 %p) {
; CHECK-LABEL: @add_or_sub_comb_i2_negative_multiuse_only_or(
; CHECK-NEXT: [[X:%.*]] = mul i2 [[P:%.*]], [[P]]
; CHECK-NEXT: [[SUB:%.*]] = sub i2 0, [[X]]
; CHECK-NEXT: [[OR:%.*]] = or i2 [[X]], [[SUB]]
; CHECK-NEXT: call void @use2(i2 [[OR]])
; CHECK-NEXT: [[ADD:%.*]] = add i2 [[OR]], [[X]]
; CHECK-NEXT: ret i2 [[ADD]]
;
%x = mul i2 %p, %p ; thwart complexity-based canonicalization
%sub = sub i2 0, %x
%or = or i2 %sub, %x
call void @use2(i2 %or) ; extra use of or
%add = add i2 %or, %x
ret i2 %add
}
define i19 @add_or_sub_comb_i19_negative_multiuse_both(i19 %p) {
; CHECK-LABEL: @add_or_sub_comb_i19_negative_multiuse_both(
; CHECK-NEXT: [[X:%.*]] = mul i19 [[P:%.*]], [[P]]
; CHECK-NEXT: [[SUB:%.*]] = sub i19 0, [[X]]
; CHECK-NEXT: call void @use19(i19 [[SUB]])
; CHECK-NEXT: [[OR:%.*]] = or i19 [[X]], [[SUB]]
; CHECK-NEXT: call void @use19(i19 [[OR]])
; CHECK-NEXT: [[ADD:%.*]] = add i19 [[OR]], [[X]]
; CHECK-NEXT: ret i19 [[ADD]]
;
%x = mul i19 %p, %p ; thwart complexity-based canonicalization
%sub = sub i19 0, %x
call void @use19(i19 %sub) ; extra use of sub
%or = or i19 %sub, %x
call void @use19(i19 %or) ; extra use of or
%add = add i19 %or, %x
ret i19 %add
}
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