| ; REQUIRES: asserts |
| ; RUN: llc < %s -mtriple=aarch64-linux-gnu -mattr=+fuse-arith-logic -verify-misched -debug-only=machine-scheduler 2>&1 > /dev/null | FileCheck %s |
| |
| ; Verify that, the macro-fusion creates the necessary dependencies between SUs and |
| ; only 2 SU's are fused at most. |
| define signext i32 @test(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d) { |
| entry: |
| ; CHECK: ********** MI Scheduling ********** |
| ; CHECK-LABEL: %bb.0 entry |
| ; CHECK: Macro fuse: SU([[SU4:[0-9]+]]) - SU([[SU5:[0-9]+]]) |
| ; CHECK: Bind SU([[SU1:[0-9]+]]) - SU([[SU4]]) |
| ; CHECK-NOT: Macro fuse: |
| ; CHECK: SU([[SU1]]): %{{[0-9]+}}:gpr32 = COPY $w2 |
| ; CHECK: SU([[SU4]]): %{{[0-9]+}}:gpr32 = nsw ADDWrr |
| ; CHECK: SU([[SU5]]): %{{[0-9]+}}:gpr32 = nsw ADDWrr |
| %add = add nsw i32 %b, %a |
| %add1 = add nsw i32 %add, %c |
| %sub = sub nsw i32 %add1, %d |
| ret i32 %sub |
| } |