| ; Test 64-bit comparisons in which the second operand is a PC-relative |
| ; variable. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| @g = global i64 1 |
| |
| ; Check signed comparisons. |
| define i64 @f1(i64 %src1) { |
| ; CHECK: f1: |
| ; CHECK: cgrl %r2, g |
| ; CHECK-NEXT: j{{g?}}l |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i64 *@g |
| %cond = icmp slt i64 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i64 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i64 %res |
| } |
| |
| ; Check unsigned comparisons. |
| define i64 @f2(i64 %src1) { |
| ; CHECK: f2: |
| ; CHECK: clgrl %r2, g |
| ; CHECK-NEXT: j{{g?}}l |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i64 *@g |
| %cond = icmp ult i64 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i64 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i64 %res |
| } |
| |
| ; Check equality, which can use CRL or CLRL. |
| define i64 @f3(i64 %src1) { |
| ; CHECK: f3: |
| ; CHECK: c{{l?}}grl %r2, g |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i64 *@g |
| %cond = icmp eq i64 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i64 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i64 %res |
| } |
| |
| ; ...likewise inequality. |
| define i64 @f4(i64 %src1) { |
| ; CHECK: f4: |
| ; CHECK: c{{l?}}grl %r2, g |
| ; CHECK-NEXT: j{{g?}}lh |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i64 *@g |
| %cond = icmp ne i64 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i64 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i64 %res |
| } |