| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instcombine -S | FileCheck %s |
| |
| ; int test0(int a) { return (a + (~(a & 0x55555555) + 1)); } |
| define i32 @test0(i32 %a0) { |
| ; CHECK-LABEL: @test0( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and i32 [[A0:%.*]], -1431655766 |
| ; CHECK-NEXT: ret i32 [[TMP1]] |
| ; |
| %1 = and i32 %a0, 1431655765 |
| %2 = xor i32 %1, -1 |
| %3 = add nsw i32 %2, 1 |
| %4 = add nsw i32 %a0, %3 |
| ret i32 %4 |
| } |
| |
| define <4 x i32> @test0_vec(<4 x i32> %a0) { |
| ; CHECK-LABEL: @test0_vec( |
| ; CHECK-NEXT: [[TMP1:%.*]] = and <4 x i32> [[A0:%.*]], <i32 -1431655766, i32 -1431655766, i32 -1431655766, i32 -1431655766> |
| ; CHECK-NEXT: ret <4 x i32> [[TMP1]] |
| ; |
| %1 = and <4 x i32> %a0, <i32 1431655765, i32 1431655765, i32 1431655765, i32 1431655765> |
| %2 = xor <4 x i32> %1, <i32 -1, i32 -1, i32 -1, i32 -1> |
| %3 = add nsw <4 x i32> %2, <i32 1, i32 1, i32 1, i32 1> |
| %4 = add nsw <4 x i32> %a0, %3 |
| ret <4 x i32> %4 |
| } |
| |
| ; int test1(int a) { return (a + (~((a >> 1) & 0x55555555) + 1)); } |
| define i32 @test1(i32 %a0) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 [[A0:%.*]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], 1431655765 |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i32 [[A0]], [[TMP2]] |
| ; CHECK-NEXT: ret i32 [[TMP3]] |
| ; |
| %1 = ashr i32 %a0, 1 |
| %2 = and i32 %1, 1431655765 |
| %3 = xor i32 %2, -1 |
| %4 = add nsw i32 %3, 1 |
| %5 = add nsw i32 %a0, %4 |
| ret i32 %5 |
| } |
| |
| define <4 x i32> @test1_vec(<4 x i32> %a0) { |
| ; CHECK-LABEL: @test1_vec( |
| ; CHECK-NEXT: [[TMP1:%.*]] = lshr <4 x i32> [[A0:%.*]], <i32 1, i32 1, i32 1, i32 1> |
| ; CHECK-NEXT: [[TMP2:%.*]] = and <4 x i32> [[TMP1]], <i32 1431655765, i32 1431655765, i32 1431655765, i32 1431655765> |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub <4 x i32> [[A0]], [[TMP2]] |
| ; CHECK-NEXT: ret <4 x i32> [[TMP3]] |
| ; |
| %1 = ashr <4 x i32> %a0, <i32 1, i32 1, i32 1, i32 1> |
| %2 = and <4 x i32> %1, <i32 1431655765, i32 1431655765, i32 1431655765, i32 1431655765> |
| %3 = xor <4 x i32> %2, <i32 -1, i32 -1, i32 -1, i32 -1> |
| %4 = add nsw <4 x i32> %3, <i32 1, i32 1, i32 1, i32 1> |
| %5 = add nsw <4 x i32> %a0, %4 |
| ret <4 x i32> %5 |
| } |