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Fix PR5411. Bug in UpdateKills. A reg def partially define its super-registers.

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llvm-svn: 88719
This commit is contained in:
Evan Cheng 2009-11-13 23:16:41 +00:00
parent 9b6ef0d374
commit e2907b91de
2 changed files with 46 additions and 0 deletions
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4
lib/CodeGen/VirtRegRewriter.cpp
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@ -583,6 +583,10 @@ static void UpdateKills(MachineInstr &MI, const TargetRegisterInfo* TRI,
RegKills.reset(*SR); RegKills.reset(*SR);
KillOps[*SR] = NULL; KillOps[*SR] = NULL;
} }
for (const unsigned *SR = TRI->getSuperRegisters(Reg); *SR; ++SR) {
RegKills.reset(*SR);
KillOps[*SR] = NULL;
}
} }
} }

42
test/CodeGen/ARM/2009-11-13-ScavengerAssert.ll Normal file
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@ -0,0 +1,42 @@
; RUN: llc -mtriple=armv7-eabi -mcpu=cortex-a8 < %s
; PR5411
%bar = type { %quad, float, float, [3 x %quux*], [3 x %bar*], [2 x %bar*], [3 x i8], i8 }
%baz = type { %bar*, i32 }
%foo = type { i8, %quuz, %quad, float, [64 x %quux], [128 x %bar], i32, %baz, %baz }
%quad = type { [4 x float] }
%quux = type { %quad, %quad }
%quuz = type { [4 x %quux*], [4 x float], i32 }
define arm_aapcs_vfpcc %bar* @aaa(%foo* nocapture %this, %quux* %a, %quux* %b, %quux* %c, i8 zeroext %forced) {
entry:
br i1 undef, label %bb85, label %bb
bb: ; preds = %entry
%0 = getelementptr inbounds %bar* null, i32 0, i32 0, i32 0, i32 2 ; <float*> [#uses=2]
%1 = load float* undef, align 4 ; <float> [#uses=1]
%2 = fsub float 0.000000e+00, undef ; <float> [#uses=2]
%3 = fmul float 0.000000e+00, undef ; <float> [#uses=1]
%4 = load float* %0, align 4 ; <float> [#uses=3]
%5 = fmul float %4, %2 ; <float> [#uses=1]
%6 = fsub float %3, %5 ; <float> [#uses=1]
%7 = fmul float %4, undef ; <float> [#uses=1]
%8 = fsub float %7, undef ; <float> [#uses=1]
%9 = fmul float undef, %2 ; <float> [#uses=1]
%10 = fmul float 0.000000e+00, undef ; <float> [#uses=1]
%11 = fsub float %9, %10 ; <float> [#uses=1]
%12 = fmul float undef, %6 ; <float> [#uses=1]
%13 = fmul float 0.000000e+00, %8 ; <float> [#uses=1]
%14 = fadd float %12, %13 ; <float> [#uses=1]
%15 = fmul float %1, %11 ; <float> [#uses=1]
%16 = fadd float %14, %15 ; <float> [#uses=1]
%17 = select i1 undef, float undef, float %16 ; <float> [#uses=1]
%18 = fdiv float %17, 0.000000e+00 ; <float> [#uses=1]
store float %18, float* undef, align 4
%19 = fmul float %4, undef ; <float> [#uses=1]
store float %19, float* %0, align 4
ret %bar* null
bb85: ; preds = %entry
ret %bar* null
}