| ; Test 64-bit signed comparison in which the second operand is a variable. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check CGR. |
| define double @f1(double %a, double %b, i64 %i1, i64 %i2) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: cgrbl %r2, %r3, 0(%r14) |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check CG with no displacement. |
| define double @f2(double %a, double %b, i64 %i1, ptr %ptr) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: cg %r2, 0(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the high end of the aligned CG range. |
| define double @f3(double %a, double %b, i64 %i1, ptr %base) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: cg %r2, 524280(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, ptr %base, i64 65535 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the next doubleword up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define double @f4(double %a, double %b, i64 %i1, ptr %base) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: agfi %r3, 524288 |
| ; CHECK: cg %r2, 0(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, ptr %base, i64 65536 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the high end of the negative aligned CG range. |
| define double @f5(double %a, double %b, i64 %i1, ptr %base) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: cg %r2, -8(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, ptr %base, i64 -1 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the low end of the CG range. |
| define double @f6(double %a, double %b, i64 %i1, ptr %base) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: cg %r2, -524288(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, ptr %base, i64 -65536 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the next doubleword down, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define double @f7(double %a, double %b, i64 %i1, ptr %base) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: agfi %r3, -524296 |
| ; CHECK: cg %r2, 0(%r3) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, ptr %base, i64 -65537 |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check that CG allows an index. |
| define double @f8(double %a, double %b, i64 %i1, i64 %base, i64 %index) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: cg %r2, 524280({{%r4,%r3|%r3,%r4}}) |
| ; CHECK-NEXT: blr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %add1 = add i64 %base, %index |
| %add2 = add i64 %add1, 524280 |
| %ptr = inttoptr i64 %add2 to ptr |
| %i2 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |
| |
| ; Check the comparison can be reversed if that allows CG to be used. |
| define double @f9(double %a, double %b, i64 %i2, ptr %ptr) { |
| ; CHECK-LABEL: f9: |
| ; CHECK: cg %r2, 0(%r3) |
| ; CHECK-NEXT: bhr %r14 |
| ; CHECK: ldr %f0, %f2 |
| ; CHECK: br %r14 |
| %i1 = load i64, ptr %ptr |
| %cond = icmp slt i64 %i1, %i2 |
| %res = select i1 %cond, double %a, double %b |
| ret double %res |
| } |