| ; Test 32-bit ANDs in which the second operand is constant. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check the lowest useful NILF value. |
| define i32 @f1(i32 %a) { |
| ; CHECK: f1: |
| ; CHECK: nilf %r2, 1 |
| ; CHECK: br %r14 |
| %and = and i32 %a, 1 |
| ret i32 %and |
| } |
| |
| ; Check the highest 16-bit constant that must be handled by NILF. |
| define i32 @f2(i32 %a) { |
| ; CHECK: f2: |
| ; CHECK: nilf %r2, 65534 |
| ; CHECK: br %r14 |
| %and = and i32 %a, 65534 |
| ret i32 %and |
| } |
| |
| ; ANDs of 0xffff are zero extensions from i16. |
| define i32 @f3(i32 %a) { |
| ; CHECK: f3: |
| ; CHECK: llhr %r2, %r2 |
| ; CHECK: br %r14 |
| %and = and i32 %a, 65535 |
| ret i32 %and |
| } |
| |
| ; Check the next value up, which must again use NILF. |
| define i32 @f4(i32 %a) { |
| ; CHECK: f4: |
| ; CHECK: nilf %r2, 65536 |
| ; CHECK: br %r14 |
| %and = and i32 %a, 65536 |
| ret i32 %and |
| } |
| |
| ; Check the lowest useful NILH value. (LLHR is used instead of NILH of 0.) |
| define i32 @f5(i32 %a) { |
| ; CHECK: f5: |
| ; CHECK: nilh %r2, 1 |
| ; CHECK: br %r14 |
| %and = and i32 %a, 131071 |
| ret i32 %and |
| } |
| |
| ; Check the highest useful NILF value. |
| define i32 @f6(i32 %a) { |
| ; CHECK: f6: |
| ; CHECK: nilf %r2, 4294901758 |
| ; CHECK: br %r14 |
| %and = and i32 %a, -65538 |
| ret i32 %and |
| } |
| |
| ; Check the highest useful NILH value, which is one up from the above. |
| define i32 @f7(i32 %a) { |
| ; CHECK: f7: |
| ; CHECK: nilh %r2, 65534 |
| ; CHECK: br %r14 |
| %and = and i32 %a, -65537 |
| ret i32 %and |
| } |
| |
| ; Check the low end of the NILL range, which is one up again. |
| define i32 @f8(i32 %a) { |
| ; CHECK: f8: |
| ; CHECK: nill %r2, 0 |
| ; CHECK: br %r14 |
| %and = and i32 %a, -65536 |
| ret i32 %and |
| } |
| |
| ; Check the next value up. |
| define i32 @f9(i32 %a) { |
| ; CHECK: f9: |
| ; CHECK: nill %r2, 1 |
| ; CHECK: br %r14 |
| %and = and i32 %a, -65535 |
| ret i32 %and |
| } |
| |
| ; Check the highest useful NILL value. |
| define i32 @f10(i32 %a) { |
| ; CHECK: f10: |
| ; CHECK: nill %r2, 65534 |
| ; CHECK: br %r14 |
| %and = and i32 %a, -2 |
| ret i32 %and |
| } |