| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| define i32 @t1(i16 zeroext %x, i32 %y) { |
| ; CHECK-LABEL: @t1( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i16 %x to i32 |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 %y, 1 |
| ; CHECK-NEXT: [[D:%.*]] = lshr i32 [[CONV]], [[TMP0]] |
| ; CHECK-NEXT: ret i32 [[D]] |
| ; |
| entry: |
| %conv = zext i16 %x to i32 |
| %s = shl i32 2, %y |
| %d = sdiv i32 %conv, %s |
| ret i32 %d |
| } |
| |
| ; rdar://11721329 |
| define i64 @t2(i64 %x, i32 %y) { |
| ; CHECK-LABEL: @t2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 %y to i64 |
| ; CHECK-NEXT: [[TMP2:%.*]] = lshr i64 %x, [[TMP1]] |
| ; CHECK-NEXT: ret i64 [[TMP2]] |
| ; |
| %1 = shl i32 1, %y |
| %2 = zext i32 %1 to i64 |
| %3 = udiv i64 %x, %2 |
| ret i64 %3 |
| } |
| |
| ; PR13250 |
| define i64 @t3(i64 %x, i32 %y) { |
| ; CHECK-LABEL: @t3( |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 %y, 2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = zext i32 [[TMP1]] to i64 |
| ; CHECK-NEXT: [[TMP3:%.*]] = lshr i64 %x, [[TMP2]] |
| ; CHECK-NEXT: ret i64 [[TMP3]] |
| ; |
| %1 = shl i32 4, %y |
| %2 = zext i32 %1 to i64 |
| %3 = udiv i64 %x, %2 |
| ret i64 %3 |
| } |
| |
| define i32 @t4(i32 %x, i32 %y) { |
| ; CHECK-LABEL: @t4( |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ugt i32 %y, 5 |
| ; CHECK-NEXT: [[DOTV:%.*]] = select i1 [[TMP1]], i32 %y, i32 5 |
| ; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 %x, [[DOTV]] |
| ; CHECK-NEXT: ret i32 [[TMP2]] |
| ; |
| %1 = shl i32 1, %y |
| %2 = icmp ult i32 %1, 32 |
| %3 = select i1 %2, i32 32, i32 %1 |
| %4 = udiv i32 %x, %3 |
| ret i32 %4 |
| } |
| |
| define i32 @t5(i1 %x, i1 %y, i32 %V) { |
| ; CHECK-LABEL: @t5( |
| ; CHECK-NEXT: [[DOTV:%.*]] = select i1 %x, i32 5, i32 6 |
| ; CHECK-NEXT: [[TMP1:%.*]] = lshr i32 %V, [[DOTV]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = select i1 %y, i32 [[TMP1]], i32 0 |
| ; CHECK-NEXT: ret i32 [[TMP2]] |
| ; |
| %1 = shl i32 1, %V |
| %2 = select i1 %x, i32 32, i32 64 |
| %3 = select i1 %y, i32 %2, i32 %1 |
| %4 = udiv i32 %V, %3 |
| ret i32 %4 |
| } |
| |
| define i32 @t6(i32 %x, i32 %z) { |
| ; CHECK-LABEL: @t6( |
| ; CHECK-NEXT: [[X_IS_ZERO:%.*]] = icmp eq i32 %x, 0 |
| ; CHECK-NEXT: [[DIVISOR:%.*]] = select i1 [[X_IS_ZERO]], i32 1, i32 %x |
| ; CHECK-NEXT: [[Y:%.*]] = udiv i32 %z, [[DIVISOR]] |
| ; CHECK-NEXT: ret i32 [[Y]] |
| ; |
| %x_is_zero = icmp eq i32 %x, 0 |
| %divisor = select i1 %x_is_zero, i32 1, i32 %x |
| %y = udiv i32 %z, %divisor |
| ret i32 %y |
| } |