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llvm-mirror/test/Feature/optnone-llc.ll
Mehdi Amini fe32b980b3 Make the default triple optional by allowing an empty string
When building LLVM as a (potentially dynamic) library that can be linked against
by multiple compilers, the default triple is not really meaningful.
We allow to explicitely set it to an empty string when configuring LLVM.
In this case, said "target independent" tests in the test suite that are using
the default triple are disabled by matching the newly available feature
"default_triple".

Reviewers: probinson, echristo
Differential Revision: http://reviews.llvm.org/D12660

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 247775
2015-09-16 05:34:32 +00:00

55 lines
2.1 KiB
LLVM

; 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, default_triple
; 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, 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{{.*}}{{[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'