diff options
| author | Paul Robinson <paul_robinson@playstation.sony.com> | 2014-03-31 17:43:35 +0000 |
|---|---|---|
| committer | Paul Robinson <paul_robinson@playstation.sony.com> | 2014-03-31 17:43:35 +0000 |
| commit | 5fa58a5b232be0b8261041a651ed1be3ae8d3848 (patch) | |
| tree | d0a611cc58c2a47e14b47d6f709b765379bd4ac8 /test/Feature | |
| parent | b6f3f9ba45d33bd52ececdda05f018c621fa9c6a (diff) | |
| download | llvm-5fa58a5b232be0b8261041a651ed1be3ae8d3848.tar.gz llvm-5fa58a5b232be0b8261041a651ed1be3ae8d3848.tar.bz2 llvm-5fa58a5b232be0b8261041a651ed1be3ae8d3848.tar.xz | |
Disable each MachineFunctionPass for 'optnone' functions, unless that
pass normally runs at optimization level None, or is part of the
register allocation pipeline.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205228 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Feature')
| -rw-r--r-- | test/Feature/optnone-llc.ll | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/test/Feature/optnone-llc.ll b/test/Feature/optnone-llc.ll new file mode 100644 index 0000000000..6cb27d0b7d --- /dev/null +++ b/test/Feature/optnone-llc.ll @@ -0,0 +1,54 @@ +; RUN: llc -O0 -debug %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LLC-O0 +; 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 + +; REQUIRES: asserts + +; This test verifies that we don't run Machine Function optimizations +; on optnone functions. + +; Function Attrs: noinline optnone +define i32 @_Z3fooi(i32 %x) #0 { +entry: + %x.addr = alloca i32, align 4 + store i32 %x, i32* %x.addr, align 4 + br label %while.cond + +while.cond: ; preds = %while.body, %entry + %0 = load i32* %x.addr, align 4 + %dec = add nsw i32 %0, -1 + store i32 %dec, i32* %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 'Machine Copy Propagation Pass' +; LLC-Ox-DAG: Skipping pass 'Machine Loop Invariant Code Motion' +; LLC-Ox-DAG: Skipping pass 'Merge disjoint stack slots' +; LLC-Ox-DAG: Skipping pass 'Optimize machine instruction PHIs' +; LLC-Ox-DAG: Skipping pass 'Peephole Optimizations' +; LLC-Ox-DAG: Skipping pass 'Post RA top-down list latency scheduler' +; 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' |