| ; Test 32-bit floating-point comparison. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check comparison with registers. |
| define i64 @f1(i64 %a, i64 %b, float %f1, float %f2) { |
| ; CHECK: f1: |
| ; CHECK: cebr %f0, %f2 |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the low end of the CEB range. |
| define i64 @f2(i64 %a, i64 %b, float %f1, float *%ptr) { |
| ; CHECK: f2: |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %f2 = load float *%ptr |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the high end of the aligned CEB range. |
| define i64 @f3(i64 %a, i64 %b, float %f1, float *%base) { |
| ; CHECK: f3: |
| ; CHECK: ceb %f0, 4092(%r4) |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float *%base, i64 1023 |
| %f2 = load float *%ptr |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check the next word up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f4(i64 %a, i64 %b, float %f1, float *%base) { |
| ; CHECK: f4: |
| ; CHECK: aghi %r4, 4096 |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float *%base, i64 1024 |
| %f2 = load float *%ptr |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define i64 @f5(i64 %a, i64 %b, float %f1, float *%base) { |
| ; CHECK: f5: |
| ; CHECK: aghi %r4, -4 |
| ; CHECK: ceb %f0, 0(%r4) |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr = getelementptr float *%base, i64 -1 |
| %f2 = load float *%ptr |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |
| |
| ; Check that CEB allows indices. |
| define i64 @f6(i64 %a, i64 %b, float %f1, float *%base, i64 %index) { |
| ; CHECK: f6: |
| ; CHECK: sllg %r1, %r5, 2 |
| ; CHECK: ceb %f0, 400(%r1,%r4) |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: lgr %r2, %r3 |
| ; CHECK: br %r14 |
| %ptr1 = getelementptr float *%base, i64 %index |
| %ptr2 = getelementptr float *%ptr1, i64 100 |
| %f2 = load float *%ptr2 |
| %cond = fcmp oeq float %f1, %f2 |
| %res = select i1 %cond, i64 %a, i64 %b |
| ret i64 %res |
| } |