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54c69d097e
As mentioned in http://lists.llvm.org/pipermail/llvm-dev/2020-July/143395.html, loop-unswitch has not been ported to the NPM. Instead people are using simple-loop-unswitch. Pin all tests in Transforms/LoopUnswitch to legacy PM and replace all other uses of loop-unswitch with simple-loop-unswitch. One test that didn't fit into the above was 2014-06-21-congruent-constant.ll which seems to only pass with loop-unswitch. That is also pinned to legacy PM. Now all tests containing "-loop-unswitch" anywhere in the test succeed with NPM turned on by default. Reviewed By: ychen Differential Revision: https://reviews.llvm.org/D85360
30 lines
979 B
LLVM
30 lines
979 B
LLVM
; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -loop-unswitch-threshold=0 -S 2>&1 | FileCheck %s
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; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -loop-unswitch-threshold=0 -enable-mssa-loop-dependency=true -verify-memoryssa -S 2>&1 | FileCheck %s
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; This is to test trivial loop unswitch only happens when trivial condition
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; itself is an LIV loop condition (not partial LIV which could occur in and/or).
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define i32 @test(i1 %cond1, i32 %var1) {
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entry:
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br label %loop_begin
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loop_begin:
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%var3 = phi i32 [%var1, %entry], [%var2, %do_something]
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%cond2 = icmp eq i32 %var3, 10
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%cond.and = and i1 %cond1, %cond2
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; %cond.and only has %cond1 as LIV so no unswitch should happen.
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; CHECK: br i1 %cond.and, label %do_something, label %loop_exit
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br i1 %cond.and, label %do_something, label %loop_exit
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do_something:
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%var2 = add i32 %var3, 1
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call void @some_func() noreturn nounwind
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br label %loop_begin
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loop_exit:
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ret i32 0
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}
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declare void @some_func() noreturn
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