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5aa9c594b3
The plan had always been to move towards using this rather than so much in-pass simplification within the loop pipeline, but we never got around to it.... until only a couple months after it was removed due to disuse. =/ This commit is just a pure revert of the removal. I will add tests and do some basic cleanup in follow-up commits. Then I'll wire it into the loop pass pipeline. Differential Revision: https://reviews.llvm.org/D47353 llvm-svn: 333250
73 lines
3.1 KiB
LLVM
73 lines
3.1 KiB
LLVM
; RUN: opt -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O0
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; RUN: opt -O1 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1
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; RUN: opt -O2 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1 --check-prefix=OPT-O2O3
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; RUN: opt -O3 -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-O1 --check-prefix=OPT-O2O3
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; RUN: opt -dce -die -gvn-hoist -loweratomic -S -debug %s 2>&1 | FileCheck %s --check-prefix=OPT-MORE
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; 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
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; REQUIRES: asserts
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; This test verifies that we don't run target independent IR-level
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; optimizations on optnone functions.
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; Function Attrs: noinline optnone
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define i32 @_Z3fooi(i32 %x) #0 {
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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br label %while.cond
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while.cond: ; preds = %while.body, %entry
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%0 = load i32, i32* %x.addr, align 4
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%dec = add nsw i32 %0, -1
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store i32 %dec, i32* %x.addr, align 4
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%tobool = icmp ne i32 %0, 0
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br i1 %tobool, label %while.body, label %while.end
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while.body: ; preds = %while.cond
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br label %while.cond
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while.end: ; preds = %while.cond
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ret i32 0
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}
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attributes #0 = { optnone noinline }
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; Nothing that runs at -O0 gets skipped.
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; OPT-O0-NOT: Skipping pass
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; IR passes run at -O1 and higher.
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; OPT-O1-DAG: Skipping pass 'Aggressive Dead Code Elimination'
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; OPT-O1-DAG: Skipping pass 'Combine redundant instructions'
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; OPT-O1-DAG: Skipping pass 'Dead Store Elimination'
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; OPT-O1-DAG: Skipping pass 'Early CSE'
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; OPT-O1-DAG: Skipping pass 'Jump Threading'
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; OPT-O1-DAG: Skipping pass 'MemCpy Optimization'
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; OPT-O1-DAG: Skipping pass 'Reassociate expressions'
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; OPT-O1-DAG: Skipping pass 'Simplify the CFG'
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; OPT-O1-DAG: Skipping pass 'Sparse Conditional Constant Propagation'
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; OPT-O1-DAG: Skipping pass 'SROA'
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; OPT-O1-DAG: Skipping pass 'Tail Call Elimination'
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; OPT-O1-DAG: Skipping pass 'Value Propagation'
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; Additional IR passes run at -O2 and higher.
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; OPT-O2O3-DAG: Skipping pass 'Global Value Numbering'
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; OPT-O2O3-DAG: Skipping pass 'SLP Vectorizer'
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; Additional IR passes that opt doesn't turn on by default.
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; OPT-MORE-DAG: Skipping pass 'Dead Code Elimination'
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; OPT-MORE-DAG: Skipping pass 'Dead Instruction Elimination'
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; Loop IR passes that opt doesn't turn on by default.
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; OPT-LOOP-DAG: Skipping pass 'Delete dead loops'
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; OPT-LOOP-DAG: Skipping pass 'Extract loops into new functions'
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; OPT-LOOP-DAG: Skipping pass 'Induction Variable Simplification'
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; OPT-LOOP-DAG: Skipping pass 'Loop Invariant Code Motion'
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; OPT-LOOP-DAG: Skipping pass 'Loop Strength Reduction'
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; OPT-LOOP-DAG: Skipping pass 'Recognize loop idioms'
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; OPT-LOOP-DAG: Skipping pass 'Reroll loops'
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; OPT-LOOP-DAG: Skipping pass 'Rotate Loops'
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; OPT-LOOP-DAG: Skipping pass 'Simplify instructions in loops'
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; OPT-LOOP-DAG: Skipping pass 'Unroll loops'
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; OPT-LOOP-DAG: Skipping pass 'Unswitch loops'
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