| ; RUN: llc -O1 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox |
| ; RUN: llc -O2 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox |
| ; RUN: llc -O3 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-Ox |
| ; RUN: llc -misched-postra -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-MORE |
| ; RUN: llc -O1 -debug-only=isel %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=FAST |
| ; RUN: llc -O1 -debug-only=isel -fast-isel=false %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=NOFAST |
| |
| ; REQUIRES: asserts, default_triple |
| ; UNSUPPORTED: target=nvptx{{.*}} |
| |
| ; This test verifies that we don't run Machine Function optimizations |
| ; on optnone functions, and that we can turn off FastISel. |
| |
| ; Function Attrs: noinline optnone |
| define i32 @_Z3fooi(i32 %x) #0 { |
| entry: |
| %x.addr = alloca i32, align 4 |
| store i32 %x, ptr %x.addr, align 4 |
| br label %while.cond |
| |
| while.cond: ; preds = %while.body, %entry |
| %0 = load i32, ptr %x.addr, align 4 |
| %dec = add nsw i32 %0, -1 |
| store i32 %dec, ptr %x.addr, align 4 |
| %tobool = icmp ne i32 %0, 0 |
| br i1 %tobool, label %while.body, label %while.end |
| |
| while.body: ; preds = %while.cond |
| br label %while.cond |
| |
| while.end: ; preds = %while.cond |
| ret i32 0 |
| } |
| |
| attributes #0 = { optnone noinline } |
| |
| ; Nothing that runs at -O0 gets skipped. |
| ; LLC-O0-NOT: Skipping pass |
| |
| ; Machine Function passes run at -O1 and higher. |
| ; LLC-Ox-DAG: Skipping pass 'Branch Probability Basic Block Placement' |
| ; LLC-Ox-DAG: Skipping pass 'CodeGen Prepare' |
| ; LLC-Ox-DAG: Skipping pass 'Control Flow Optimizer' |
| ; LLC-Ox-DAG: Skipping pass 'Machine code sinking' |
| ; LLC-Ox-DAG: Skipping pass 'Machine Common Subexpression Elimination' |
| ; LLC-Ox-DAG: Skipping pass 'Shrink Wrapping analysis' |
| ; LLC-Ox-DAG: Skipping pass 'Machine Copy Propagation Pass' |
| ; LLC-Ox-DAG: Skipping pass 'Machine Instruction Scheduler' |
| ; LLC-Ox-DAG: Skipping pass 'Machine Loop Invariant Code Motion' |
| ; LLC-Ox-DAG: Skipping pass 'Optimize machine instruction PHIs' |
| ; LLC-Ox-DAG: Skipping pass 'Peephole Optimizations' |
| ; LLC-Ox-DAG: Skipping pass 'Post{{.*}}RA{{.*}}{{[Ss]}}cheduler' |
| ; LLC-Ox-DAG: Skipping pass 'Remove dead machine instructions' |
| ; LLC-Ox-DAG: Skipping pass 'Tail Duplication' |
| |
| ; Alternate post-RA scheduler. |
| ; LLC-MORE: Skipping pass 'PostRA Machine Instruction Scheduler' |
| |
| ; Selectively disable FastISel for optnone functions. |
| ; FAST: FastISel is enabled |
| ; NOFAST: FastISel is disabled |