1; RUN: llc -O0 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-O0 2; RUN: llc -O1 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox 3; RUN: llc -O2 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox 4; RUN: llc -O3 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox 5; RUN: llc -misched-postra -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-MORE 6 7; REQUIRES: asserts 8 9; This test verifies that we don't run Machine Function optimizations 10; on optnone functions. 11 12; Function Attrs: noinline optnone 13define i32 @_Z3fooi(i32 %x) #0 { 14entry: 15 %x.addr = alloca i32, align 4 16 store i32 %x, i32* %x.addr, align 4 17 br label %while.cond 18 19while.cond: ; preds = %while.body, %entry 20 %0 = load i32* %x.addr, align 4 21 %dec = add nsw i32 %0, -1 22 store i32 %dec, i32* %x.addr, align 4 23 %tobool = icmp ne i32 %0, 0 24 br i1 %tobool, label %while.body, label %while.end 25 26while.body: ; preds = %while.cond 27 br label %while.cond 28 29while.end: ; preds = %while.cond 30 ret i32 0 31} 32 33attributes #0 = { optnone noinline } 34 35; Nothing that runs at -O0 gets skipped. 36; LLC-O0-NOT: Skipping pass 37 38; Machine Function passes run at -O1 and higher. 39; LLC-Ox-DAG: Skipping pass 'Branch Probability Basic Block Placement' 40; LLC-Ox-DAG: Skipping pass 'CodeGen Prepare' 41; LLC-Ox-DAG: Skipping pass 'Control Flow Optimizer' 42; LLC-Ox-DAG: Skipping pass 'Machine code sinking' 43; LLC-Ox-DAG: Skipping pass 'Machine Common Subexpression Elimination' 44; LLC-Ox-DAG: Skipping pass 'Machine Copy Propagation Pass' 45; LLC-Ox-DAG: Skipping pass 'Machine Loop Invariant Code Motion' 46; LLC-Ox-DAG: Skipping pass 'Merge disjoint stack slots' 47; LLC-Ox-DAG: Skipping pass 'Optimize machine instruction PHIs' 48; LLC-Ox-DAG: Skipping pass 'Peephole Optimizations' 49; LLC-Ox-DAG: Skipping pass 'Post{{.*}}RA{{.*}}{{[Ss]}}cheduler' 50; LLC-Ox-DAG: Skipping pass 'Remove dead machine instructions' 51; LLC-Ox-DAG: Skipping pass 'Tail Duplication' 52 53; Alternate post-RA scheduler. 54; LLC-MORE: Skipping pass 'PostRA Machine Instruction Scheduler' 55