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3c3f64c605
Sinking the and closer to a compare against zero is beneficial on PPC as it allows us to emit record-form instructions. In the future, we may expand this to a larger set of operations that feed compares against zero since PPC has lots of record-form instructions. Differential revision: https://reviews.llvm.org/D46060 llvm-svn: 331416
54 lines
1.5 KiB
LLVM
54 lines
1.5 KiB
LLVM
; RUN: llc < %s -mtriple=powerpc64le-unknown-unknown -mcpu=pwr8 \
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; RUN: -verify-machineinstrs | FileCheck %s
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declare void @free()
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define dso_local fastcc void @test2() {
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; CHECK-LABEL: test2
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entry:
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switch i16 undef, label %sw.default [
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i16 10, label %sw.bb52
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i16 134, label %sw.bb54
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]
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sw.default: ; preds = %entry
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unreachable
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sw.bb52: ; preds = %entry, %entry, %entry, %entry, %entry, %entry
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br i1 undef, label %if.then14.i, label %sw.epilog.i642
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if.then14.i: ; preds = %sw.bb52
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%call39.i = call i64 @test() #3
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%and.i126.i = and i64 %call39.i, 1
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br i1 undef, label %dummy.exit.i, label %if.then.i.i.i636
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if.then.i.i.i636: ; preds = %if.then14.i
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%0 = load i8*, i8** undef, align 8
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call void @free() #3
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br label %dummy.exit.i
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dummy.exit.i: ; preds = %if.then.i.i.i636, %if.then14.i
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; CHECK: # %dummy.exit.i
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; CHECK-NEXT: andi.
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; CHECK-NEXT: bc 12
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%cond82.i = icmp eq i64 %and.i126.i, 0
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br i1 %cond82.i, label %if.end50.i, label %dummy.exit
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if.end50.i: ; preds = %dummy.exit.i
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unreachable
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sw.epilog.i642: ; preds = %sw.bb52
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unreachable
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dummy.exit: ; preds = %dummy.exit.i
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unreachable
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sw.bb54: ; preds = %entry, %entry
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call fastcc void @test3()
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unreachable
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}
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declare dso_local fastcc void @test3()
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declare i64 @test()
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