| ; RUN: opt -consthoist -S < %s | FileCheck %s |
| target triple = "x86_64--" |
| |
| ; We don't want to convert constant divides because the benefit from converting |
| ; them to a mul in the backend is larget than constant materialization savings. |
| define void @signed_const_division(i64 %in1, i64 %in2, i64* %addr) { |
| ; CHECK-LABEL: @signed_const_division |
| ; CHECK: %res1 = sdiv i64 %l1, 4294967296 |
| ; CHECK: %res2 = srem i64 %l2, 4294967296 |
| entry: |
| br label %loop |
| |
| loop: |
| %l1 = phi i64 [%res1, %loop], [%in1, %entry] |
| %l2 = phi i64 [%res2, %loop], [%in2, %entry] |
| %res1 = sdiv i64 %l1, 4294967296 |
| store volatile i64 %res1, i64* %addr |
| %res2 = srem i64 %l2, 4294967296 |
| store volatile i64 %res2, i64* %addr |
| %again = icmp eq i64 %res1, %res2 |
| br i1 %again, label %loop, label %end |
| |
| end: |
| ret void |
| } |
| |
| define void @unsigned_const_division(i64 %in1, i64 %in2, i64* %addr) { |
| ; CHECK-LABEL: @unsigned_const_division |
| ; CHECK: %res1 = udiv i64 %l1, 4294967296 |
| ; CHECK: %res2 = urem i64 %l2, 4294967296 |
| |
| entry: |
| br label %loop |
| |
| loop: |
| %l1 = phi i64 [%res1, %loop], [%in1, %entry] |
| %l2 = phi i64 [%res2, %loop], [%in2, %entry] |
| %res1 = udiv i64 %l1, 4294967296 |
| store volatile i64 %res1, i64* %addr |
| %res2 = urem i64 %l2, 4294967296 |
| store volatile i64 %res2, i64* %addr |
| %again = icmp eq i64 %res1, %res2 |
| br i1 %again, label %loop, label %end |
| |
| end: |
| ret void |
| } |