| ; Test 128-bit addition 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, ptr %ptr) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: algrk %r2, %r4, %r5 |
| ; CHECK: alcgr |
| ; 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 |
| %add = add i128 %x, %y |
| %addv = bitcast i128 %add to <2 x i64> |
| %high = extractelement <2 x i64> %addv, i32 0 |
| store i64 %high, ptr %ptr |
| %low = extractelement <2 x i64> %addv, i32 1 |
| ret i64 %low |
| } |
| |
| ; Test addition of 1. |
| define void @f2(i64 %a, i64 %b, ptr %ptr) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: alghsik {{%r[0-5]}}, %r3, 1 |
| ; CHECK: alcgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %a, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %add = add i128 %x, 1 |
| store i128 %add, ptr %ptr |
| ret void |
| } |
| |
| ; Test the upper end of the ALGHSIK range. |
| define void @f3(i64 %a, i64 %b, ptr %ptr) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: alghsik {{%r[0-5]}}, %r3, 32767 |
| ; CHECK: alcgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %a, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %add = add i128 %x, 32767 |
| store i128 %add, ptr %ptr |
| ret void |
| } |
| |
| ; Test the next value up, which should use ALGFI instead. |
| define void @f4(i64 %a, i64 %b, ptr %ptr) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: algfi %r3, 32768 |
| ; CHECK: alcgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %a, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %add = add i128 %x, 32768 |
| store i128 %add, ptr %ptr |
| ret void |
| } |
| |
| ; Test the lower end of the ALGHSIK range. |
| define void @f5(i64 %a, i64 %b, ptr %ptr) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: alghsik {{%r[0-5]}}, %r3, -32768 |
| ; CHECK: alcgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %a, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %add = add i128 %x, -32768 |
| store i128 %add, ptr %ptr |
| ret void |
| } |
| |
| ; Test the next value down, which cannot use either ALGHSIK or ALGFI. |
| define void @f6(i64 %a, i64 %b, ptr %ptr) { |
| ; CHECK-LABEL: f6: |
| ; CHECK-NOT: alghsik |
| ; CHECK-NOT: algfi |
| ; CHECK: alcgr |
| ; CHECK: br %r14 |
| %x1 = insertelement <2 x i64> undef, i64 %a, i32 0 |
| %x2 = insertelement <2 x i64> %x1, i64 %b, i32 1 |
| %x = bitcast <2 x i64> %x2 to i128 |
| %add = add i128 %x, -32769 |
| store i128 %add, ptr %ptr |
| ret void |
| } |