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699d18eb82
Fix assert about using an undefined physical register in machine instruction verify pass. The reason is that register flag undef is missing when doing transformation from If Conversion Pass. ``` Bad machine code: Using an undefined physical register - function: func_65 - basic block: %bb.0 entry (0x10024740738) - instruction: BCLR killed $cr5lt, implicit $lr8, implicit $rm, implicit undef $x3 - operand 0: killed $cr5lt LLVM ERROR: Found 1 machine code errors. ``` There are also other existing testcases with same issue. So I add -verify-machineinstrs option to open verifying. Differential Revision: https://reviews.llvm.org/D55408 llvm-svn: 348566
33 lines
984 B
LLVM
33 lines
984 B
LLVM
; RUN: llc -verify-machineinstrs < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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; Function Attrs: nounwind
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define hidden void @_mpd_shortdiv(i64 %n) #0 {
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entry:
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br i1 undef, label %for.end, label %for.body.lr.ph
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for.body.lr.ph: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body, %for.body.lr.ph
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%i.018.in = phi i64 [ %n, %for.body.lr.ph ], [ %i.018, %for.body ]
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%i.018 = add i64 %i.018.in, -1
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%jj = sext i64 %i.018 to i128
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%add.i = or i128 %jj, undef
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%div.i = udiv i128 %add.i, %jj
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%conv3.i11 = trunc i128 %div.i to i64
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store i64 %conv3.i11, i64* undef, align 8
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%cmp = icmp eq i64 %i.018, 0
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br i1 %cmp, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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ret void
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}
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; CHECK-LABEL: @_mpd_shortdiv
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; CHECK-NOT: mtctr
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attributes #0 = { nounwind }
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