| ; Test LOCHI and LOCGHI. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs | FileCheck %s |
| ; |
| ; Run the test again to make sure it still works the same even |
| ; in the presence of the select instructions. |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z15 -verify-machineinstrs | FileCheck %s |
| |
| |
| define i32 @f1(i32 %x) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: chi %r2, 0 |
| ; CHECK: lhi %r2, 0 |
| ; CHECK: lochilh %r2, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i32 %x, 0 |
| %res = select i1 %cond, i32 42, i32 0 |
| ret i32 %res |
| } |
| |
| define i32 @f2(i32 %x, i32 %y) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: chi %r2, 0 |
| ; CHECK: lochilh %r3, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i32 %x, 0 |
| %res = select i1 %cond, i32 42, i32 %y |
| ret i32 %res |
| } |
| |
| define i32 @f3(i32 %x, i32 %y) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: chi %r2, 0 |
| ; CHECK: lochie %r3, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i32 %x, 0 |
| %res = select i1 %cond, i32 %y, i32 42 |
| ret i32 %res |
| } |
| |
| define i64 @f4(i64 %x) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: cghi %r2, 0 |
| ; CHECK: lghi %r2, 0 |
| ; CHECK: locghilh %r2, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i64 %x, 0 |
| %res = select i1 %cond, i64 42, i64 0 |
| ret i64 %res |
| } |
| |
| define i64 @f5(i64 %x, i64 %y) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: cghi %r2, 0 |
| ; CHECK: locghilh %r3, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i64 %x, 0 |
| %res = select i1 %cond, i64 42, i64 %y |
| ret i64 %res |
| } |
| |
| define i64 @f6(i64 %x, i64 %y) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: cghi %r2, 0 |
| ; CHECK: locghie %r3, 42 |
| ; CHECK: br %r14 |
| %cond = icmp ne i64 %x, 0 |
| %res = select i1 %cond, i64 %y, i64 42 |
| ret i64 %res |
| } |
| |
| ; Check that we also get LOCHI as a result of early if-conversion. |
| define i32 @f7(i32 %x, i32 %y) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: chi %r2, 0 |
| ; CHECK: lochie %r3, 42 |
| ; CHECK: br %r14 |
| entry: |
| %cond = icmp ne i32 %x, 0 |
| br i1 %cond, label %if.then, label %return |
| |
| if.then: |
| br label %return |
| |
| return: |
| %res = phi i32 [ %y, %if.then ], [ 42, %entry ] |
| ret i32 %res |
| } |
| |
| ; ... and the same for LOCGHI. |
| define i64 @f8(i64 %x, i64 %y) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: cghi %r2, 0 |
| ; CHECK: locghie %r3, 42 |
| ; CHECK: br %r14 |
| entry: |
| %cond = icmp ne i64 %x, 0 |
| br i1 %cond, label %if.then, label %return |
| |
| if.then: |
| br label %return |
| |
| return: |
| %res = phi i64 [ %y, %if.then ], [ 42, %entry ] |
| ret i64 %res |
| } |
| |
| ; Check that inverting the condition works as well. |
| define i32 @f9(i32 %x, i32 %y) { |
| ; CHECK-LABEL: f9: |
| ; CHECK: chi %r2, 0 |
| ; CHECK: lochilh %r3, 42 |
| ; CHECK: br %r14 |
| entry: |
| %cond = icmp ne i32 %x, 0 |
| br i1 %cond, label %if.then, label %return |
| |
| if.then: |
| br label %return |
| |
| return: |
| %res = phi i32 [ 42, %if.then ], [ %y, %entry ] |
| ret i32 %res |
| } |
| |
| ; ... and the same for LOCGHI. |
| define i64 @f10(i64 %x, i64 %y) { |
| ; CHECK-LABEL: f10: |
| ; CHECK: cghi %r2, 0 |
| ; CHECK: locghilh %r3, 42 |
| ; CHECK: br %r14 |
| entry: |
| %cond = icmp ne i64 %x, 0 |
| br i1 %cond, label %if.then, label %return |
| |
| if.then: |
| br label %return |
| |
| return: |
| %res = phi i64 [ 42, %if.then ], [ %y, %entry ] |
| ret i64 %res |
| } |
| |