179 lines
5.1 KiB
LLVM
179 lines
5.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine -S %s | FileCheck %s
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define i32 @reassoc_add_nuw(i32 %x) {
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; CHECK-LABEL: @reassoc_add_nuw(
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; CHECK-NEXT: [[ADD1:%.*]] = add nuw i32 [[X:%.*]], 68
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%add0 = add nuw i32 %x, 4
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%add1 = add nuw i32 %add0, 64
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ret i32 %add1
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}
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; This does the wrong thing because the sub is turned into an add of a
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; negative constant first which drops the nuw.
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define i32 @reassoc_sub_nuw(i32 %x) {
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; CHECK-LABEL: @reassoc_sub_nuw(
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; CHECK-NEXT: [[SUB1:%.*]] = add i32 [[X:%.*]], -68
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; CHECK-NEXT: ret i32 [[SUB1]]
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;
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%sub0 = sub nuw i32 %x, 4
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%sub1 = sub nuw i32 %sub0, 64
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ret i32 %sub1
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}
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define i32 @reassoc_mul_nuw(i32 %x) {
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; CHECK-LABEL: @reassoc_mul_nuw(
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; CHECK-NEXT: [[MUL1:%.*]] = mul nuw i32 [[X:%.*]], 260
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; CHECK-NEXT: ret i32 [[MUL1]]
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;
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%mul0 = mul nuw i32 %x, 4
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%mul1 = mul nuw i32 %mul0, 65
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ret i32 %mul1
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}
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define i32 @no_reassoc_add_nuw_none(i32 %x) {
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; CHECK-LABEL: @no_reassoc_add_nuw_none(
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; CHECK-NEXT: [[ADD1:%.*]] = add i32 [[X:%.*]], 68
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%add0 = add i32 %x, 4
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%add1 = add nuw i32 %add0, 64
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ret i32 %add1
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}
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define i32 @no_reassoc_add_none_nuw(i32 %x) {
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; CHECK-LABEL: @no_reassoc_add_none_nuw(
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; CHECK-NEXT: [[ADD1:%.*]] = add i32 [[X:%.*]], 68
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%add0 = add nuw i32 %x, 4
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%add1 = add i32 %add0, 64
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ret i32 %add1
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}
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define i32 @reassoc_x2_add_nuw(i32 %x, i32 %y) {
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; CHECK-LABEL: @reassoc_x2_add_nuw(
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; CHECK-NEXT: [[ADD1:%.*]] = add nuw i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[ADD2:%.*]] = add nuw i32 [[ADD1]], 12
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; CHECK-NEXT: ret i32 [[ADD2]]
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;
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%add0 = add nuw i32 %x, 4
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%add1 = add nuw i32 %y, 8
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%add2 = add nuw i32 %add0, %add1
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ret i32 %add2
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}
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define i32 @reassoc_x2_mul_nuw(i32 %x, i32 %y) {
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; CHECK-LABEL: @reassoc_x2_mul_nuw(
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; CHECK-NEXT: [[MUL1:%.*]] = mul i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[MUL2:%.*]] = mul nuw i32 [[MUL1]], 45
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; CHECK-NEXT: ret i32 [[MUL2]]
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;
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%mul0 = mul nuw i32 %x, 5
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%mul1 = mul nuw i32 %y, 9
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%mul2 = mul nuw i32 %mul0, %mul1
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ret i32 %mul2
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}
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define i32 @reassoc_x2_sub_nuw(i32 %x, i32 %y) {
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; CHECK-LABEL: @reassoc_x2_sub_nuw(
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; CHECK-NEXT: [[TMP1:%.*]] = sub i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SUB2:%.*]] = add i32 [[TMP1]], 4
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; CHECK-NEXT: ret i32 [[SUB2]]
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;
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%sub0 = sub nuw i32 %x, 4
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%sub1 = sub nuw i32 %y, 8
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%sub2 = sub nuw i32 %sub0, %sub1
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ret i32 %sub2
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}
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define i32 @tryFactorization_add_nuw_mul_nuw(i32 %x) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw(
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; CHECK-NEXT: [[ADD2:%.*]] = shl nuw i32 [[X:%.*]], 2
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; CHECK-NEXT: ret i32 [[ADD2]]
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;
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%mul1 = mul nuw i32 %x, 3
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%add2 = add nuw i32 %mul1, %x
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ret i32 %add2
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}
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define i32 @tryFactorization_add_nuw_mul_nuw_int_max(i32 %x) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_int_max(
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; CHECK-NEXT: [[ADD2:%.*]] = shl nuw i32 [[X:%.*]], 31
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; CHECK-NEXT: ret i32 [[ADD2]]
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;
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%mul1 = mul nuw i32 %x, 2147483647
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%add2 = add nuw i32 %mul1, %x
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ret i32 %add2
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}
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define i32 @tryFactorization_add_mul_nuw(i32 %x) {
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; CHECK-LABEL: @tryFactorization_add_mul_nuw(
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; CHECK-NEXT: [[ADD2:%.*]] = shl i32 [[X:%.*]], 2
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; CHECK-NEXT: ret i32 [[ADD2]]
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;
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%mul1 = mul i32 %x, 3
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%add2 = add nuw i32 %mul1, %x
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ret i32 %add2
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}
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define i32 @tryFactorization_add_nuw_mul(i32 %x) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul(
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; CHECK-NEXT: [[ADD2:%.*]] = shl i32 [[X:%.*]], 2
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; CHECK-NEXT: ret i32 [[ADD2]]
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;
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%mul1 = mul nuw i32 %x, 3
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%add2 = add i32 %mul1, %x
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ret i32 %add2
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}
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define i32 @tryFactorization_add_nuw_mul_nuw_mul_nuw_var(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_mul_nuw_var(
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; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[ADD1:%.*]] = mul nuw i32 [[MUL21]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%mul1 = mul nuw i32 %x, %y
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%mul2 = mul nuw i32 %x, %z
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%add1 = add nuw i32 %mul1, %mul2
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ret i32 %add1
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}
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define i32 @tryFactorization_add_nuw_mul_mul_nuw_var(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul_mul_nuw_var(
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; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%mul1 = mul i32 %x, %y
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%mul2 = mul nuw i32 %x, %z
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%add1 = add nuw i32 %mul1, %mul2
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ret i32 %add1
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}
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define i32 @tryFactorization_add_nuw_mul_nuw_mul_var(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @tryFactorization_add_nuw_mul_nuw_mul_var(
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; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%mul1 = mul nuw i32 %x, %y
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%mul2 = mul i32 %x, %z
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%add1 = add nuw i32 %mul1, %mul2
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ret i32 %add1
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}
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define i32 @tryFactorization_add_mul_nuw_mul_var(i32 %x, i32 %y, i32 %z) {
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; CHECK-LABEL: @tryFactorization_add_mul_nuw_mul_var(
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; CHECK-NEXT: [[MUL21:%.*]] = add i32 [[Y:%.*]], [[Z:%.*]]
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; CHECK-NEXT: [[ADD1:%.*]] = mul i32 [[MUL21]], [[X:%.*]]
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; CHECK-NEXT: ret i32 [[ADD1]]
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;
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%mul1 = mul nuw i32 %x, %y
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%mul2 = mul nuw i32 %x, %z
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%add1 = add i32 %mul1, %mul2
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ret i32 %add1
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}
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