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Fix PR 7433. Silly typo in non-Darwin ARM tail call
handling, plus correct R9 handling in that mode. llvm-svn: 106434
This commit is contained in:
Dale Johannesen
parent
8909d46ea2
commit
ef3db5dea3
@ -1072,7 +1072,7 @@ let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
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Pseudo, IIC_Br,
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"@TC_RETURN","\t$dst", []>, Requires<[IsNotDarwin]>;
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def TCRETURNriND : AInoP<(outs), (ins tGPR:$dst, variable_ops),
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def TCRETURNriND : AInoP<(outs), (ins tcGPR:$dst, variable_ops),
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Pseudo, IIC_Br,
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"@TC_RETURN","\t$dst", []>, Requires<[IsNotDarwin]>;
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@ -1084,7 +1084,7 @@ let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
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IIC_Br, "b.w\t$dst @ TAILCALL",
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[]>, Requires<[IsThumb, IsNotDarwin]>;
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def TAILJMPrND : AXI<(outs), (ins tGPR:$dst, variable_ops),
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def TAILJMPrND : AXI<(outs), (ins tcGPR:$dst, variable_ops),
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BrMiscFrm, IIC_Br, "bx\t$dst @ TAILCALL",
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[]>, Requires<[IsNotDarwin]> {
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let Inst{7-4} = 0b0001;
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@ -386,14 +386,9 @@ def tcGPR : RegisterClass<"ARM", [i32], 32, [R0, R1, R2, R3, R9, R12]> {
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return ARM_GPR_NOR9_TC;
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else
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return ARM_GPR_R9_TC;
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} else {
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if (Subtarget.isR9Reserved())
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return ARM_GPR_NOR9_TC;
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else if (Subtarget.isThumb())
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return ARM_GPR_R9_TC;
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else
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return ARM_GPR_R9_TC;
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}
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} else
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// R9 is either callee-saved or reserved; can't use it.
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return ARM_GPR_NOR9_TC;
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}
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tcGPRClass::iterator
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@ -412,14 +407,9 @@ def tcGPR : RegisterClass<"ARM", [i32], 32, [R0, R1, R2, R3, R9, R12]> {
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I = ARM_GPR_NOR9_TC + (sizeof(ARM_GPR_NOR9_TC)/sizeof(unsigned));
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else
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I = ARM_GPR_R9_TC + (sizeof(ARM_GPR_R9_TC)/sizeof(unsigned));
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} else {
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if (Subtarget.isR9Reserved())
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I = ARM_GPR_NOR9_TC + (sizeof(ARM_GPR_NOR9_TC)/sizeof(unsigned));
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else if (Subtarget.isThumb())
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I = ARM_GPR_R9_TC + (sizeof(ARM_GPR_R9_TC)/sizeof(unsigned));
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else
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I = ARM_GPR_R9_TC + (sizeof(ARM_GPR_R9_TC)/sizeof(unsigned));
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}
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} else
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// R9 is either callee-saved or reserved; can't use it.
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I = ARM_GPR_NOR9_TC + (sizeof(ARM_GPR_NOR9_TC)/sizeof(unsigned));
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return I;
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}
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}];
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145
test/CodeGen/ARM/2010-06-21-nondarwin-tc.ll
Executable file
145
test/CodeGen/ARM/2010-06-21-nondarwin-tc.ll
Executable file
@ -0,0 +1,145 @@
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; RUN: llc < %s -march=arm -mtriple=armv4t-unknown-linux-gnueabi
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; PR 7433
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%0 = type { i8*, i8* }
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%1 = type { i8*, i8*, i8* }
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%"class.llvm::Record" = type { i32, %"class.std::basic_string", %"class.llvm::SMLoc", %"class.std::vector", %"class.std::vector", %"class.std::vector" }
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%"class.llvm::RecordVal" = type { %"class.std::basic_string", %"struct.llvm::Init"*, i32, %"struct.llvm::Init"* }
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%"class.llvm::SMLoc" = type { i8* }
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%"class.llvm::StringInit" = type { [8 x i8], %"class.std::basic_string" }
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%"class.std::basic_string" = type { %"class.llvm::SMLoc" }
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%"class.std::vector" = type { [12 x i8] }
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%"struct.llvm::Init" = type { i32 (...)** }
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@_ZTIN4llvm5RecTyE = external constant %0 ; <%0*> [#uses=1]
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@_ZTIN4llvm4InitE = external constant %0 ; <%0*> [#uses=1]
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@_ZTIN4llvm11RecordRecTyE = external constant %1 ; <%1*> [#uses=1]
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@.str8 = external constant [47 x i8] ; <[47 x i8]*> [#uses=1]
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@_ZTIN4llvm9UnsetInitE = external constant %1 ; <%1*> [#uses=1]
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@.str51 = external constant [45 x i8] ; <[45 x i8]*> [#uses=1]
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@__PRETTY_FUNCTION__._ZNK4llvm7VarInit12getFieldInitERNS_6RecordEPKNS_9RecordValERKSs = external constant [116 x i8] ; <[116 x i8]*> [#uses=1]
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@_ZN4llvm9RecordValC1ERKSsPNS_5RecTyEj = alias void (%"class.llvm::RecordVal"*, %"class.std::basic_string"*, %"struct.llvm::Init"*, i32)* @_ZN4llvm9RecordValC2ERKSsPNS_5RecTyEj ; <void (%"class.llvm::RecordVal"*, %"class.std::basic_string"*, %"struct.llvm::Init"*, i32)*> [#uses=0]
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declare i8* @__dynamic_cast(i8*, i8*, i8*, i32)
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declare void @__assert_fail(i8*, i8*, i32, i8*) noreturn
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declare void @_ZN4llvm9RecordValC2ERKSsPNS_5RecTyEj(%"class.llvm::RecordVal"*, %"class.std::basic_string"*, %"struct.llvm::Init"*, i32) align 2
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define %"struct.llvm::Init"* @_ZNK4llvm7VarInit12getFieldInitERNS_6RecordEPKNS_9RecordValERKSs(%"class.llvm::StringInit"* %this, %"class.llvm::Record"* %R, %"class.llvm::RecordVal"* %RV, %"class.std::basic_string"* %FieldName) align 2 {
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;CHECK: ldmia sp!, {r4, r5, r6, r7, r8, lr}
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;CHECK: bx r12 @ TAILCALL
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entry:
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%.loc = alloca i32 ; <i32*> [#uses=2]
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%tmp.i = getelementptr inbounds %"class.llvm::StringInit"* %this, i32 0, i32 0, i32 4 ; <i8*> [#uses=1]
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%0 = bitcast i8* %tmp.i to %"struct.llvm::Init"** ; <%"struct.llvm::Init"**> [#uses=1]
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%tmp2.i = load %"struct.llvm::Init"** %0 ; <%"struct.llvm::Init"*> [#uses=2]
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%1 = icmp eq %"struct.llvm::Init"* %tmp2.i, null ; <i1> [#uses=1]
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br i1 %1, label %entry.return_crit_edge, label %tmpbb
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entry.return_crit_edge: ; preds = %entry
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br label %return
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tmpbb: ; preds = %entry
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%2 = bitcast %"struct.llvm::Init"* %tmp2.i to i8* ; <i8*> [#uses=1]
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%3 = tail call i8* @__dynamic_cast(i8* %2, i8* bitcast (%0* @_ZTIN4llvm5RecTyE to i8*), i8* bitcast (%1* @_ZTIN4llvm11RecordRecTyE to i8*), i32 -1) ; <i8*> [#uses=1]
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%phitmp = icmp eq i8* %3, null ; <i1> [#uses=1]
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br i1 %phitmp, label %.return_crit_edge, label %if.then
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.return_crit_edge: ; preds = %tmpbb
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br label %return
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if.then: ; preds = %tmpbb
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%tmp2.i.i.i.i = getelementptr inbounds %"class.llvm::StringInit"* %this, i32 0, i32 1, i32 0, i32 0 ; <i8**> [#uses=1]
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%tmp3.i.i.i.i = load i8** %tmp2.i.i.i.i ; <i8*> [#uses=2]
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%arrayidx.i.i.i.i = getelementptr inbounds i8* %tmp3.i.i.i.i, i32 -12 ; <i8*> [#uses=1]
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%tmp.i.i.i = bitcast i8* %arrayidx.i.i.i.i to i32* ; <i32*> [#uses=1]
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%tmp2.i.i.i = load i32* %tmp.i.i.i ; <i32> [#uses=1]
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%tmp.i5 = getelementptr inbounds %"class.llvm::Record"* %R, i32 0, i32 4 ; <%"class.std::vector"*> [#uses=1]
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%tmp2.i.i = getelementptr inbounds %"class.llvm::Record"* %R, i32 0, i32 4, i32 0, i32 4 ; <i8*> [#uses=1]
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%4 = bitcast i8* %tmp2.i.i to %"class.llvm::RecordVal"** ; <%"class.llvm::RecordVal"**> [#uses=1]
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%tmp3.i.i6 = load %"class.llvm::RecordVal"** %4 ; <%"class.llvm::RecordVal"*> [#uses=1]
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%tmp5.i.i = bitcast %"class.std::vector"* %tmp.i5 to %"class.llvm::RecordVal"** ; <%"class.llvm::RecordVal"**> [#uses=1]
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%tmp6.i.i = load %"class.llvm::RecordVal"** %tmp5.i.i ; <%"class.llvm::RecordVal"*> [#uses=5]
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%sub.ptr.lhs.cast.i.i = ptrtoint %"class.llvm::RecordVal"* %tmp3.i.i6 to i32 ; <i32> [#uses=1]
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%sub.ptr.rhs.cast.i.i = ptrtoint %"class.llvm::RecordVal"* %tmp6.i.i to i32 ; <i32> [#uses=1]
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%sub.ptr.sub.i.i = sub i32 %sub.ptr.lhs.cast.i.i, %sub.ptr.rhs.cast.i.i ; <i32> [#uses=1]
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%sub.ptr.div.i.i = ashr i32 %sub.ptr.sub.i.i, 4 ; <i32> [#uses=1]
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br label %codeRepl
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codeRepl: ; preds = %if.then
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%targetBlock = call i1 @_ZNK4llvm7VarInit12getFieldInitERNS_6RecordEPKNS_9RecordValERKSs_for.cond.i(i32 %sub.ptr.div.i.i, %"class.llvm::RecordVal"* %tmp6.i.i, i32 %tmp2.i.i.i, i8* %tmp3.i.i.i.i, i32* %.loc) ; <i1> [#uses=1]
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%.reload = load i32* %.loc ; <i32> [#uses=3]
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br i1 %targetBlock, label %for.cond.i.return_crit_edge, label %_ZN4llvm6Record8getValueENS_9StringRefE.exit
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for.cond.i.return_crit_edge: ; preds = %codeRepl
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br label %return
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_ZN4llvm6Record8getValueENS_9StringRefE.exit: ; preds = %codeRepl
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%add.ptr.i.i = getelementptr inbounds %"class.llvm::RecordVal"* %tmp6.i.i, i32 %.reload ; <%"class.llvm::RecordVal"*> [#uses=2]
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%tobool5 = icmp eq %"class.llvm::RecordVal"* %add.ptr.i.i, null ; <i1> [#uses=1]
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br i1 %tobool5, label %_ZN4llvm6Record8getValueENS_9StringRefE.exit.return_crit_edge, label %if.then6
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_ZN4llvm6Record8getValueENS_9StringRefE.exit.return_crit_edge: ; preds = %_ZN4llvm6Record8getValueENS_9StringRefE.exit
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br label %return
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if.then6: ; preds = %_ZN4llvm6Record8getValueENS_9StringRefE.exit
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%cmp = icmp eq %"class.llvm::RecordVal"* %add.ptr.i.i, %RV ; <i1> [#uses=1]
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br i1 %cmp, label %if.then6.if.end_crit_edge, label %land.lhs.true
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if.then6.if.end_crit_edge: ; preds = %if.then6
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br label %if.end
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land.lhs.true: ; preds = %if.then6
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%tobool10 = icmp eq %"class.llvm::RecordVal"* %RV, null ; <i1> [#uses=1]
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br i1 %tobool10, label %lor.lhs.false, label %land.lhs.true.return_crit_edge
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land.lhs.true.return_crit_edge: ; preds = %land.lhs.true
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br label %return
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lor.lhs.false: ; preds = %land.lhs.true
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%tmp.i3 = getelementptr inbounds %"class.llvm::RecordVal"* %tmp6.i.i, i32 %.reload, i32 3 ; <%"struct.llvm::Init"**> [#uses=1]
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%tmp2.i4 = load %"struct.llvm::Init"** %tmp.i3 ; <%"struct.llvm::Init"*> [#uses=2]
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%5 = icmp eq %"struct.llvm::Init"* %tmp2.i4, null ; <i1> [#uses=1]
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br i1 %5, label %lor.lhs.false.if.end_crit_edge, label %tmpbb1
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lor.lhs.false.if.end_crit_edge: ; preds = %lor.lhs.false
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br label %if.end
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tmpbb1: ; preds = %lor.lhs.false
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%6 = bitcast %"struct.llvm::Init"* %tmp2.i4 to i8* ; <i8*> [#uses=1]
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%7 = tail call i8* @__dynamic_cast(i8* %6, i8* bitcast (%0* @_ZTIN4llvm4InitE to i8*), i8* bitcast (%1* @_ZTIN4llvm9UnsetInitE to i8*), i32 -1) ; <i8*> [#uses=1]
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%phitmp32 = icmp eq i8* %7, null ; <i1> [#uses=1]
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br i1 %phitmp32, label %.if.end_crit_edge, label %.return_crit_edge1
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.return_crit_edge1: ; preds = %tmpbb1
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br label %return
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.if.end_crit_edge: ; preds = %tmpbb1
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br label %if.end
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if.end: ; preds = %.if.end_crit_edge, %lor.lhs.false.if.end_crit_edge, %if.then6.if.end_crit_edge
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%tmp.i1 = getelementptr inbounds %"class.llvm::RecordVal"* %tmp6.i.i, i32 %.reload, i32 3 ; <%"struct.llvm::Init"**> [#uses=1]
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%tmp2.i2 = load %"struct.llvm::Init"** %tmp.i1 ; <%"struct.llvm::Init"*> [#uses=3]
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%8 = bitcast %"class.llvm::StringInit"* %this to %"struct.llvm::Init"* ; <%"struct.llvm::Init"*> [#uses=1]
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%cmp19 = icmp eq %"struct.llvm::Init"* %tmp2.i2, %8 ; <i1> [#uses=1]
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br i1 %cmp19, label %cond.false, label %cond.end
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cond.false: ; preds = %if.end
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tail call void @__assert_fail(i8* getelementptr inbounds ([45 x i8]* @.str51, i32 0, i32 0), i8* getelementptr inbounds ([47 x i8]* @.str8, i32 0, i32 0), i32 1141, i8* getelementptr inbounds ([116 x i8]* @__PRETTY_FUNCTION__._ZNK4llvm7VarInit12getFieldInitERNS_6RecordEPKNS_9RecordValERKSs, i32 0, i32 0)) noreturn
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unreachable
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cond.end: ; preds = %if.end
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%9 = bitcast %"struct.llvm::Init"* %tmp2.i2 to %"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)*** ; <%"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)***> [#uses=1]
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%10 = load %"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)*** %9 ; <%"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)**> [#uses=1]
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%vfn = getelementptr inbounds %"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)** %10, i32 8 ; <%"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)**> [#uses=1]
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%11 = load %"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)** %vfn ; <%"struct.llvm::Init"* (%"struct.llvm::Init"*, %"class.llvm::Record"*, %"class.llvm::RecordVal"*, %"class.std::basic_string"*)*> [#uses=1]
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%call25 = tail call %"struct.llvm::Init"* %11(%"struct.llvm::Init"* %tmp2.i2, %"class.llvm::Record"* %R, %"class.llvm::RecordVal"* %RV, %"class.std::basic_string"* %FieldName) ; <%"struct.llvm::Init"*> [#uses=1]
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ret %"struct.llvm::Init"* %call25
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return: ; preds = %.return_crit_edge1, %land.lhs.true.return_crit_edge, %_ZN4llvm6Record8getValueENS_9StringRefE.exit.return_crit_edge, %for.cond.i.return_crit_edge, %.return_crit_edge, %entry.return_crit_edge
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ret %"struct.llvm::Init"* null
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}
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declare i1 @_ZNK4llvm7VarInit12getFieldInitERNS_6RecordEPKNS_9RecordValERKSs_for.cond.i(i32, %"class.llvm::RecordVal"*, i32, i8*, i32*)
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