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2a61cbf5d0
This fixes the crash from PR29072, where the MachineBasicBlock::iterator wasn't being properly checked against MachineBasicBlock::end() before iterating. This was another bug exposed by the new ilist::iterator::operator*() assertion from r279314. This testcase is poor quality. bugpoint couldn't reduce any further, and I haven't had time to dig into what's going on so I can't invent a better one. I didn't even get good CHECK lines in: this is just a crasher. I'm committing anyway since this is a real crash with an obvious fix, but I'll leave PR29072 open and ask an ARM maintainer to help improve the testcase. llvm-svn: 279391
83 lines
3.7 KiB
LLVM
83 lines
3.7 KiB
LLVM
; RUN: llc < %s
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; Ensure that ARMFrameLowering can emit an epilogue when there's no terminator.
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; This is the crasher from PR29072.
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv7-unknown-linux-gnueabihf"
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%t1 = type { [4 x float] }
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%t3 = type { i32 (...)** }
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%t2 = type { %t3, i8, %t1, %t1, float }
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define internal void @foo(%t2* nocapture %this, %t1* nocapture readonly %triangle, i32 %partId, i32 %triangleIndex) {
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entry:
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br i1 undef, label %if.else, label %if.end
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if.else: ; preds = %entry
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%arrayidx.i = getelementptr inbounds %t1, %t1* %triangle, i32 0, i32 0, i32 0
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%0 = load float, float* %arrayidx.i, align 4
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%arrayidx5.i = getelementptr inbounds %t1, %t1* %triangle, i32 0, i32 0, i32 1
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%1 = load float, float* %arrayidx5.i, align 4
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%2 = load float, float* null, align 4
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%arrayidx11.i = getelementptr inbounds %t1, %t1* %triangle, i32 0, i32 0, i32 2
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%3 = load float, float* %arrayidx11.i, align 4
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%arrayidx13.i = getelementptr inbounds %t2, %t2* %this, i32 0, i32 2, i32 0, i32 2
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%4 = load float, float* %arrayidx13.i, align 4
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%arrayidx.i129 = getelementptr inbounds %t1, %t1* %triangle, i32 1, i32 0, i32 0
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%5 = load float, float* %arrayidx.i129, align 4
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%sub.i131 = fsub float %5, 0.000000e+00
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%arrayidx5.i132 = getelementptr inbounds %t1, %t1* %triangle, i32 1, i32 0, i32 1
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%6 = load float, float* %arrayidx5.i132, align 4
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%sub8.i134 = fsub float %6, %2
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%arrayidx11.i135 = getelementptr inbounds %t1, %t1* %triangle, i32 1, i32 0, i32 2
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%7 = load float, float* %arrayidx11.i135, align 4
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%sub14.i137 = fsub float %7, %4
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%arrayidx.i149 = getelementptr inbounds %t1, %t1* %triangle, i32 2, i32 0, i32 0
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%8 = load float, float* %arrayidx.i149, align 4
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%sub.i151 = fsub float %8, 0.000000e+00
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%arrayidx5.i152 = getelementptr inbounds %t1, %t1* %triangle, i32 2, i32 0, i32 1
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%9 = load float, float* %arrayidx5.i152, align 4
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%sub8.i154 = fsub float %9, %2
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%10 = load float, float* undef, align 4
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%sub14.i157 = fsub float %10, %4
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%mul.i = fmul float %sub8.i134, %sub14.i157
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%mul10.i = fmul float %sub14.i137, %sub8.i154
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%sub.i146 = fsub float %mul.i, %mul10.i
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%mul11.i = fmul float undef, %sub.i146
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%mul18.i = fmul float %sub14.i137, %sub.i151
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%mul23.i = fmul float %sub.i131, %sub14.i157
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%sub24.i = fsub float %mul18.i, %mul23.i
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%mul25.i = fmul float undef, %sub24.i
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%add.i148 = fadd float %mul11.i, %mul25.i
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%add40.i = fadd float undef, %add.i148
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%call.i = tail call float @fabsf(float %add40.i)
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%mul = fmul float %call.i, 2.500000e-01
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%add.i118 = fadd float %0, %5
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%add8.i121 = fadd float %1, %6
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%add14.i124 = fadd float %3, %7
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%add.i105 = fadd float %add.i118, %8
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%add8.i108 = fadd float %add8.i121, %9
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%add14.i111 = fadd float %add14.i124, %10
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%add.i93 = fadd float 0.000000e+00, %add.i105
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%add8.i96 = fadd float %2, %add8.i108
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%add14.i = fadd float %4, %add14.i111
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%mul.i.i = fmul float %add.i93, %mul
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%mul4.i.i = fmul float %add8.i96, %mul
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%mul8.i.i = fmul float %mul, %add14.i
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%arrayidx3.i = getelementptr inbounds %t2, %t2* %this, i32 0, i32 3, i32 0, i32 0
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%add.i = fadd float undef, %mul.i.i
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store float %add.i, float* %arrayidx3.i, align 4
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%arrayidx7.i86 = getelementptr inbounds %t2, %t2* %this, i32 0, i32 3, i32 0, i32 1
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%add8.i = fadd float %mul4.i.i, undef
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store float %add8.i, float* %arrayidx7.i86, align 4
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%arrayidx12.i = getelementptr inbounds %t2, %t2* %this, i32 0, i32 3, i32 0, i32 2
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%add13.i = fadd float %mul8.i.i, undef
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store float %add13.i, float* %arrayidx12.i, align 4
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br label %if.end
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if.end: ; preds = %if.else, %entry
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ret void
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}
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declare float @fabsf(float) readnone
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