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      1 ; RUN: opt     -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O0
      2 ; RUN: opt -O1 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1
      3 ; RUN: opt -O2 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1 --check-prefix=OPT-O2O3
      4 ; RUN: opt -O3 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1 --check-prefix=OPT-O2O3
      5 ; RUN: opt -bb-vectorize -dce -die -loweratomic -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-MORE
      6 ; RUN: opt -indvars -licm -loop-deletion -loop-extract -loop-idiom -loop-instsimplify -loop-reduce -loop-reroll -loop-rotate -loop-unroll -loop-unswitch -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-LOOP
      7 
      8 ; REQUIRES: asserts
      9 
     10 ; This test verifies that we don't run target independent IR-level
     11 ; optimizations on optnone functions.
     12 
     13 ; Function Attrs: noinline optnone
     14 define i32 @_Z3fooi(i32 %x) #0 {
     15 entry:
     16   %x.addr = alloca i32, align 4
     17   store i32 %x, i32* %x.addr, align 4
     18   br label %while.cond
     19 
     20 while.cond:                                       ; preds = %while.body, %entry
     21   %0 = load i32, i32* %x.addr, align 4
     22   %dec = add nsw i32 %0, -1
     23   store i32 %dec, i32* %x.addr, align 4
     24   %tobool = icmp ne i32 %0, 0
     25   br i1 %tobool, label %while.body, label %while.end
     26 
     27 while.body:                                       ; preds = %while.cond
     28   br label %while.cond
     29 
     30 while.end:                                        ; preds = %while.cond
     31   ret i32 0
     32 }
     33 
     34 attributes #0 = { optnone noinline }
     35 
     36 ; Nothing that runs at -O0 gets skipped.
     37 ; OPT-O0-NOT: Skipping pass
     38 
     39 ; IR passes run at -O1 and higher.
     40 ; OPT-O1-DAG: Skipping pass 'Aggressive Dead Code Elimination'
     41 ; OPT-O1-DAG: Skipping pass 'Combine redundant instructions'
     42 ; OPT-O1-DAG: Skipping pass 'Dead Store Elimination'
     43 ; OPT-O1-DAG: Skipping pass 'Early CSE'
     44 ; OPT-O1-DAG: Skipping pass 'Jump Threading'
     45 ; OPT-O1-DAG: Skipping pass 'MemCpy Optimization'
     46 ; OPT-O1-DAG: Skipping pass 'Reassociate expressions'
     47 ; OPT-O1-DAG: Skipping pass 'Simplify the CFG'
     48 ; OPT-O1-DAG: Skipping pass 'Sparse Conditional Constant Propagation'
     49 ; OPT-O1-DAG: Skipping pass 'SROA'
     50 ; OPT-O1-DAG: Skipping pass 'Tail Call Elimination'
     51 ; OPT-O1-DAG: Skipping pass 'Value Propagation'
     52 
     53 ; Additional IR passes run at -O2 and higher.
     54 ; OPT-O2O3-DAG: Skipping pass 'Global Value Numbering'
     55 ; OPT-O2O3-DAG: Skipping pass 'SLP Vectorizer'
     56 
     57 ; Additional IR passes that opt doesn't turn on by default.
     58 ; OPT-MORE-DAG: Skipping pass 'Basic-Block Vectorization'
     59 ; OPT-MORE-DAG: Skipping pass 'Dead Code Elimination'
     60 ; OPT-MORE-DAG: Skipping pass 'Dead Instruction Elimination'
     61 ; OPT-MORE-DAG: Skipping pass 'Lower atomic intrinsics
     62 
     63 ; Loop IR passes that opt doesn't turn on by default.
     64 ; OPT-LOOP-DAG: Skipping pass 'Delete dead loops'
     65 ; OPT-LOOP-DAG: Skipping pass 'Extract loops into new functions'
     66 ; OPT-LOOP-DAG: Skipping pass 'Induction Variable Simplification'
     67 ; OPT-LOOP-DAG: Skipping pass 'Loop Invariant Code Motion'
     68 ; OPT-LOOP-DAG: Skipping pass 'Loop Strength Reduction'
     69 ; OPT-LOOP-DAG: Skipping pass 'Recognize loop idioms'
     70 ; OPT-LOOP-DAG: Skipping pass 'Reroll loops'
     71 ; OPT-LOOP-DAG: Skipping pass 'Rotate Loops'
     72 ; OPT-LOOP-DAG: Skipping pass 'Simplify instructions in loops'
     73 ; OPT-LOOP-DAG: Skipping pass 'Unroll loops'
     74 ; OPT-LOOP-DAG: Skipping pass 'Unswitch loops'
     75