| ; Test 128-bit subtraction when the distinct-operands facility is available. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s |
| |
| ; Test the case where both operands are in registers. |
| define i64 @f1(i64 %a, i64 %b, i64 %c, i64 %d, i64 *%ptr) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: slgrk %r2, %r4, %r5 |
| ; CHECK: slbgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %b, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %c, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %y2 = insertelement <2 x i64> %x1, i64 %d, i32 1 |
| %y = bitcast <2 x i64> %y2 to i128 |
| %sub = sub i128 %x, %y |
| %subv = bitcast i128 %sub to <2 x i64> |
| %high = extractelement <2 x i64> %subv, i32 0 |
| store i64 %high, i64 *%ptr |
| %low = extractelement <2 x i64> %subv, i32 1 |
| ret i64 %low |
| } |
