| ; Test 32-bit comparisons in which the second operand is a PC-relative |
| ; variable. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| @g = global i32 1 |
| |
| ; Check signed comparisons. |
| define i32 @f1(i32 %src1) { |
| ; CHECK: f1: |
| ; CHECK: crl %r2, g |
| ; CHECK-NEXT: j{{g?}}l |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i32 *@g |
| %cond = icmp slt i32 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i32 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i32 %res |
| } |
| |
| ; Check unsigned comparisons. |
| define i32 @f2(i32 %src1) { |
| ; CHECK: f2: |
| ; CHECK: clrl %r2, g |
| ; CHECK-NEXT: j{{g?}}l |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i32 *@g |
| %cond = icmp ult i32 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i32 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i32 %res |
| } |
| |
| ; Check equality, which can use CRL or CLRL. |
| define i32 @f3(i32 %src1) { |
| ; CHECK: f3: |
| ; CHECK: c{{l?}}rl %r2, g |
| ; CHECK-NEXT: j{{g?}}e |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i32 *@g |
| %cond = icmp eq i32 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i32 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i32 %res |
| } |
| |
| ; ...likewise inequality. |
| define i32 @f4(i32 %src1) { |
| ; CHECK: f4: |
| ; CHECK: c{{l?}}rl %r2, g |
| ; CHECK-NEXT: j{{g?}}lh |
| ; CHECK: br %r14 |
| entry: |
| %src2 = load i32 *@g |
| %cond = icmp ne i32 %src1, %src2 |
| br i1 %cond, label %exit, label %mulb |
| mulb: |
| %mul = mul i32 %src1, %src1 |
| br label %exit |
| exit: |
| %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ] |
| ret i32 %res |
| } |