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f7dc9d0f5e
After changes in rL231820 loop re-rotation is performed even in -Oz mode. Since loop rotation is disabled for -Oz, it seems loop re-rotation should be disabled too. Differential Revision: http://reviews.llvm.org/D10961 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241897 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
673 B
LLVM
31 lines
673 B
LLVM
; REQUIRES: asserts
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; RUN: opt < %s -S -Os -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OS
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; RUN: opt < %s -S -Oz -debug -debug-only=loop-rotate 2>&1 | FileCheck %s -check-prefix=OZ
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; Loop should be rotated for -Os but not for -Oz.
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; OS: rotating Loop at depth 1
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; OZ-NOT: rotating Loop at depth 1
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@e = global i32 10
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declare void @use(i32)
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define void @test() {
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entry:
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%end = load i32, i32* @e
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br label %loop
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loop:
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%n.phi = phi i32 [ %n, %loop.fin ], [ 0, %entry ]
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%cond = icmp eq i32 %n.phi, %end
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br i1 %cond, label %exit, label %loop.fin
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loop.fin:
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%n = add i32 %n.phi, 1
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call void @use(i32 %n)
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br label %loop
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exit:
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ret void
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}
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