forked from OSchip/llvm-project
180 lines
5.2 KiB
LLVM
180 lines
5.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -instcombine -S %s | FileCheck %s
|
|
|
|
define i32 @reassoc_add_nuw(i32 %x) {
|
|
; CHECK-LABEL: @reassoc_add_nuw(
|
|
; CHECK-NEXT: [[ADD1:%.*]] = add nuw i32 [[X:%.*]], 68
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%add0 = add nuw i32 %x, 4
|
|
%add1 = add nuw i32 %add0, 64
|
|
ret i32 %add1
|
|
}
|
|
|
|
; This does the wrong thing because the sub is turned into an add of a
|
|
; negative constant first which drops the nuw.
|
|
define i32 @reassoc_sub_nuw(i32 %x) {
|
|
; CHECK-LABEL: @reassoc_sub_nuw(
|
|
; CHECK-NEXT: [[SUB1:%.*]] = add i32 [[X:%.*]], -68
|
|
; CHECK-NEXT: ret i32 [[SUB1]]
|
|
;
|
|
%sub0 = sub nuw i32 %x, 4
|
|
%sub1 = sub nuw i32 %sub0, 64
|
|
ret i32 %sub1
|
|
}
|
|
|
|
define i32 @reassoc_mul_nuw(i32 %x) {
|
|
; CHECK-LABEL: @reassoc_mul_nuw(
|
|
; CHECK-NEXT: [[MUL1:%.*]] = mul nuw i32 [[X:%.*]], 260
|
|
; CHECK-NEXT: ret i32 [[MUL1]]
|
|
;
|
|
%mul0 = mul nuw i32 %x, 4
|
|
%mul1 = mul nuw i32 %mul0, 65
|
|
ret i32 %mul1
|
|
}
|
|
|
|
define i32 @no_reassoc_add_nuw_none(i32 %x) {
|
|
; CHECK-LABEL: @no_reassoc_add_nuw_none(
|
|
; CHECK-NEXT: [[ADD1:%.*]] = add i32 [[X:%.*]], 68
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%add0 = add i32 %x, 4
|
|
%add1 = add nuw i32 %add0, 64
|
|
ret i32 %add1
|
|
}
|
|
|
|
define i32 @no_reassoc_add_none_nuw(i32 %x) {
|
|
; CHECK-LABEL: @no_reassoc_add_none_nuw(
|
|
; CHECK-NEXT: [[ADD1:%.*]] = add i32 [[X:%.*]], 68
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%add0 = add nuw i32 %x, 4
|
|
%add1 = add i32 %add0, 64
|
|
ret i32 %add1
|
|
}
|
|
|
|
define i32 @reassoc_x2_add_nuw(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @reassoc_x2_add_nuw(
|
|
; CHECK-NEXT: [[ADD1:%.*]] = add nuw i32 [[X:%.*]], [[Y:%.*]]
|
|
; CHECK-NEXT: [[ADD2:%.*]] = add nuw i32 [[ADD1]], 12
|
|
; CHECK-NEXT: ret i32 [[ADD2]]
|
|
;
|
|
%add0 = add nuw i32 %x, 4
|
|
%add1 = add nuw i32 %y, 8
|
|
%add2 = add nuw i32 %add0, %add1
|
|
ret i32 %add2
|
|
}
|
|
|
|
define i32 @reassoc_x2_mul_nuw(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @reassoc_x2_mul_nuw(
|
|
; CHECK-NEXT: [[MUL1:%.*]] = mul i32 [[X:%.*]], [[Y:%.*]]
|
|
; CHECK-NEXT: [[MUL2:%.*]] = mul nuw i32 [[MUL1]], 45
|
|
; CHECK-NEXT: ret i32 [[MUL2]]
|
|
;
|
|
%mul0 = mul nuw i32 %x, 5
|
|
%mul1 = mul nuw i32 %y, 9
|
|
%mul2 = mul nuw i32 %mul0, %mul1
|
|
ret i32 %mul2
|
|
}
|
|
|
|
define i32 @reassoc_x2_sub_nuw(i32 %x, i32 %y) {
|
|
; CHECK-LABEL: @reassoc_x2_sub_nuw(
|
|
; CHECK-NEXT: [[SUB0:%.*]] = add i32 [[X:%.*]], -4
|
|
; CHECK-NEXT: [[SUB1:%.*]] = add i32 [[Y:%.*]], -8
|
|
; CHECK-NEXT: [[SUB2:%.*]] = sub nuw i32 [[SUB0]], [[SUB1]]
|
|
; CHECK-NEXT: ret i32 [[SUB2]]
|
|
;
|
|
%sub0 = sub nuw i32 %x, 4
|
|
%sub1 = sub nuw i32 %y, 8
|
|
%sub2 = sub nuw i32 %sub0, %sub1
|
|
ret i32 %sub2
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul_nuw(i32 %x) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw(
|
|
; CHECK-NEXT: [[ADD2:%.*]] = shl nuw i32 [[X:%.*]], 2
|
|
; CHECK-NEXT: ret i32 [[ADD2]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, 3
|
|
%add2 = add nuw i32 %mul1, %x
|
|
ret i32 %add2
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul_nuw_int_max(i32 %x) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_int_max(
|
|
; CHECK-NEXT: [[ADD2:%.*]] = shl nuw i32 [[X:%.*]], 31
|
|
; CHECK-NEXT: ret i32 [[ADD2]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, 2147483647
|
|
%add2 = add nuw i32 %mul1, %x
|
|
ret i32 %add2
|
|
}
|
|
|
|
define i32 @tryFactorization_add_mul_nuw(i32 %x) {
|
|
; CHECK-LABEL: @tryFactorization_add_mul_nuw(
|
|
; CHECK-NEXT: [[ADD2:%.*]] = shl i32 [[X:%.*]], 2
|
|
; CHECK-NEXT: ret i32 [[ADD2]]
|
|
;
|
|
%mul1 = mul i32 %x, 3
|
|
%add2 = add nuw i32 %mul1, %x
|
|
ret i32 %add2
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul(i32 %x) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul(
|
|
; CHECK-NEXT: [[ADD2:%.*]] = shl i32 [[X:%.*]], 2
|
|
; CHECK-NEXT: ret i32 [[ADD2]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, 3
|
|
%add2 = add i32 %mul1, %x
|
|
ret i32 %add2
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul_nuw_mul_nuw_var(i32 %x, i32 %y, i32 %z) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_mul_nuw_var(
|
|
; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
|
|
; CHECK-NEXT: [[ADD1:%.*]] = mul nuw i32 [[MUL21]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, %y
|
|
%mul2 = mul nuw i32 %x, %z
|
|
%add1 = add nuw i32 %mul1, %mul2
|
|
ret i32 %add1
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul_mul_nuw_var(i32 %x, i32 %y, i32 %z) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul_mul_nuw_var(
|
|
; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
|
|
; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%mul1 = mul i32 %x, %y
|
|
%mul2 = mul nuw i32 %x, %z
|
|
%add1 = add nuw i32 %mul1, %mul2
|
|
ret i32 %add1
|
|
}
|
|
|
|
define i32 @tryFactorization_add_nuw_mul_nuw_mul_var(i32 %x, i32 %y, i32 %z) {
|
|
; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_mul_var(
|
|
; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
|
|
; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, %y
|
|
%mul2 = mul i32 %x, %z
|
|
%add1 = add nuw i32 %mul1, %mul2
|
|
ret i32 %add1
|
|
}
|
|
|
|
define i32 @tryFactorization_add_mul_nuw_mul_var(i32 %x, i32 %y, i32 %z) {
|
|
; CHECK-LABEL: @tryFactorization_add_mul_nuw_mul_var(
|
|
; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
|
|
; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
|
|
; CHECK-NEXT: ret i32 [[ADD1]]
|
|
;
|
|
%mul1 = mul nuw i32 %x, %y
|
|
%mul2 = mul nuw i32 %x, %z
|
|
%add1 = add i32 %mul1, %mul2
|
|
ret i32 %add1
|
|
}
|