| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=riscv64 -mattr=+m -verify-machineinstrs < %s | FileCheck %s |
| |
| ; This test has multiple opportunities for SimplifyDemandedBits after type |
| ; legalization. There are 2 opportunities on the chain feeding the LHS of the |
| ; shl. And one opportunity on the shift amount. We previously weren't managing |
| ; the DAGCombiner worklist correctly and failed to get the RHS. |
| |
| define i32 @foo(i32 %x, i32 %y, i32 %z) { |
| ; CHECK-LABEL: foo: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: mulw a0, a0, a0 |
| ; CHECK-NEXT: addi a0, a0, 1 |
| ; CHECK-NEXT: mul a0, a0, a0 |
| ; CHECK-NEXT: add a0, a0, a2 |
| ; CHECK-NEXT: addi a0, a0, 1 |
| ; CHECK-NEXT: sllw a0, a0, a1 |
| ; CHECK-NEXT: ret |
| %b = mul i32 %x, %x |
| %c = add i32 %b, 1 |
| %d = mul i32 %c, %c |
| %e = add i32 %d, %z |
| %f = add i32 %e, 1 |
| %g = shl i32 %f, %y |
| ret i32 %g |
| } |
