| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=m68k-linux-gnu -verify-machineinstrs | FileCheck %s |
| |
| declare {i32, i1} @llvm.umul.with.overflow.i32(i32 %a, i32 %b) |
| |
| define i1 @a(i32 %x) nounwind { |
| ; CHECK-LABEL: a: |
| ; CHECK: ; %bb.0: |
| ; CHECK-NEXT: suba.l #20, %sp |
| ; CHECK-NEXT: move.l #3, (12,%sp) |
| ; CHECK-NEXT: move.l #0, (8,%sp) |
| ; CHECK-NEXT: move.l (24,%sp), (4,%sp) |
| ; CHECK-NEXT: move.l #0, (%sp) |
| ; CHECK-NEXT: jsr __muldi3@PLT |
| ; CHECK-NEXT: cmpi.l #0, %d0 |
| ; CHECK-NEXT: sne %d0 |
| ; CHECK-NEXT: adda.l #20, %sp |
| ; CHECK-NEXT: rts |
| %res = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %x, i32 3) |
| %obil = extractvalue {i32, i1} %res, 1 |
| ret i1 %obil |
| } |
| |
| define i32 @test2(i32 %a, i32 %b) nounwind readnone { |
| ; CHECK-LABEL: test2: |
| ; CHECK: ; %bb.0: ; %entry |
| ; CHECK-NEXT: move.l (8,%sp), %d0 |
| ; CHECK-NEXT: add.l (4,%sp), %d0 |
| ; CHECK-NEXT: add.l %d0, %d0 |
| ; CHECK-NEXT: rts |
| entry: |
| %tmp0 = add i32 %b, %a |
| %tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 2) |
| %tmp2 = extractvalue { i32, i1 } %tmp1, 0 |
| ret i32 %tmp2 |
| } |
| |
| ; It shouldn't fallback to builtin in this scenario |
| ; Since we don't need the overflow bit here |
| define i32 @test3(i32 %a, i32 %b) nounwind readnone { |
| ; CHECK-LABEL: test3: |
| ; CHECK: ; %bb.0: ; %entry |
| ; CHECK-NEXT: move.l (8,%sp), %d0 |
| ; CHECK-NEXT: add.l (4,%sp), %d0 |
| ; CHECK-NEXT: lsl.l #2, %d0 |
| ; CHECK-NEXT: rts |
| entry: |
| %tmp0 = add i32 %b, %a |
| %tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 4) |
| %tmp2 = extractvalue { i32, i1 } %tmp1, 0 |
| ret i32 %tmp2 |
| } |