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Check if subreg index is zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88899 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
parent
285a7d57dc
commit
39aa7251a2
@ -142,8 +142,10 @@ void TargetInstrInfoImpl::reMaterialize(MachineBasicBlock &MBB,
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if (TargetRegisterInfo::isVirtualRegister(DestReg)) {
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MO.setReg(DestReg);
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MO.setSubReg(SubIdx);
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} else {
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} else if (SubIdx) {
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MO.setReg(TRI->getSubReg(DestReg, SubIdx));
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} else {
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MO.setReg(DestReg);
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}
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MBB.insert(I, MI);
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}
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155
test/CodeGen/PowerPC/2009-11-15-ReMatBug.ll
Normal file
155
test/CodeGen/PowerPC/2009-11-15-ReMatBug.ll
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@ -0,0 +1,155 @@
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; RUN: llc < %s -mtriple=powerpc-apple-darwin8
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%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
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%struct.__gcov_var = type { %struct.FILE*, i32, i32, i32, i32, i32, i32, [1025 x i32] }
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%struct.__sFILEX = type opaque
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%struct.__sbuf = type { i8*, i32 }
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%struct.gcov_ctr_info = type { i32, i64*, void (i64*, i32)* }
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%struct.gcov_ctr_summary = type { i32, i32, i64, i64, i64 }
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%struct.gcov_fn_info = type { i32, i32, [0 x i32] }
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%struct.gcov_info = type { i32, %struct.gcov_info*, i32, i8*, i32, %struct.gcov_fn_info*, i32, [0 x %struct.gcov_ctr_info] }
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%struct.gcov_summary = type { i32, [1 x %struct.gcov_ctr_summary] }
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@__gcov_var = external global %struct.__gcov_var ; <%struct.__gcov_var*> [#uses=1]
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@__sF = external global [0 x %struct.FILE] ; <[0 x %struct.FILE]*> [#uses=1]
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@.str = external constant [56 x i8], align 4 ; <[56 x i8]*> [#uses=1]
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@gcov_list = external global %struct.gcov_info* ; <%struct.gcov_info**> [#uses=1]
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@.str7 = external constant [35 x i8], align 4 ; <[35 x i8]*> [#uses=1]
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@.str8 = external constant [9 x i8], align 4 ; <[9 x i8]*> [#uses=1]
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@.str9 = external constant [10 x i8], align 4 ; <[10 x i8]*> [#uses=1]
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@.str10 = external constant [36 x i8], align 4 ; <[36 x i8]*> [#uses=1]
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declare i32 @"\01_fprintf$LDBL128"(%struct.FILE*, i8*, ...) nounwind
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define void @gcov_exit() nounwind {
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entry:
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%gi_ptr.0357 = load %struct.gcov_info** @gcov_list, align 4 ; <%struct.gcov_info*> [#uses=1]
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%0 = alloca i8, i32 undef, align 1 ; <i8*> [#uses=3]
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br i1 undef, label %return, label %bb.nph341
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bb.nph341: ; preds = %entry
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%object27 = bitcast %struct.gcov_summary* undef to i8* ; <i8*> [#uses=1]
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br label %bb25
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bb25: ; preds = %read_fatal, %bb.nph341
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%gi_ptr.1329 = phi %struct.gcov_info* [ %gi_ptr.0357, %bb.nph341 ], [ undef, %read_fatal ] ; <%struct.gcov_info*> [#uses=1]
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call void @llvm.memset.i32(i8* %object27, i8 0, i32 36, i32 8)
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br i1 undef, label %bb49.1, label %bb48
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bb48: ; preds = %bb25
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br label %bb49.1
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bb51: ; preds = %bb48.4, %bb49.3
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switch i32 undef, label %bb58 [
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i32 0, label %rewrite
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i32 1734567009, label %bb59
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]
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bb58: ; preds = %bb51
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%1 = call i32 (%struct.FILE*, i8*, ...)* @"\01_fprintf$LDBL128"(%struct.FILE* getelementptr inbounds ([0 x %struct.FILE]* @__sF, i32 0, i32 2), i8* getelementptr inbounds ([35 x i8]* @.str7, i32 0, i32 0), i8* %0) nounwind ; <i32> [#uses=0]
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br label %read_fatal
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bb59: ; preds = %bb51
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br i1 undef, label %bb60, label %bb3.i156
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bb3.i156: ; preds = %bb59
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store i8 52, i8* undef, align 1
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store i8 42, i8* undef, align 1
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%2 = call i32 (%struct.FILE*, i8*, ...)* @"\01_fprintf$LDBL128"(%struct.FILE* getelementptr inbounds ([0 x %struct.FILE]* @__sF, i32 0, i32 2), i8* getelementptr inbounds ([56 x i8]* @.str, i32 0, i32 0), i8* %0, i8* undef, i8* undef) nounwind ; <i32> [#uses=0]
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br label %read_fatal
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bb60: ; preds = %bb59
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br i1 undef, label %bb78.preheader, label %rewrite
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bb78.preheader: ; preds = %bb60
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br i1 undef, label %bb62, label %bb80
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bb62: ; preds = %bb78.preheader
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br i1 undef, label %bb64, label %read_mismatch
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bb64: ; preds = %bb62
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br i1 undef, label %bb65, label %read_mismatch
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bb65: ; preds = %bb64
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br i1 undef, label %bb75, label %read_mismatch
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read_mismatch: ; preds = %bb98, %bb119.preheader, %bb72, %bb71, %bb65, %bb64, %bb62
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%3 = icmp eq i32 undef, -1 ; <i1> [#uses=1]
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%iftmp.11.0 = select i1 %3, i8* getelementptr inbounds ([10 x i8]* @.str9, i32 0, i32 0), i8* getelementptr inbounds ([9 x i8]* @.str8, i32 0, i32 0) ; <i8*> [#uses=1]
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%4 = call i32 (%struct.FILE*, i8*, ...)* @"\01_fprintf$LDBL128"(%struct.FILE* getelementptr inbounds ([0 x %struct.FILE]* @__sF, i32 0, i32 2), i8* getelementptr inbounds ([36 x i8]* @.str10, i32 0, i32 0), i8* %0, i8* %iftmp.11.0) nounwind ; <i32> [#uses=0]
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br label %read_fatal
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bb71: ; preds = %bb75
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%5 = load i32* undef, align 4 ; <i32> [#uses=1]
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%6 = getelementptr inbounds %struct.gcov_info* %gi_ptr.1329, i32 0, i32 7, i32 undef, i32 2 ; <void (i64*, i32)**> [#uses=1]
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%7 = load void (i64*, i32)** %6, align 4 ; <void (i64*, i32)*> [#uses=1]
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%8 = call i32 @__gcov_read_unsigned() nounwind ; <i32> [#uses=1]
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%9 = call i32 @__gcov_read_unsigned() nounwind ; <i32> [#uses=1]
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%10 = icmp eq i32 %tmp386, %8 ; <i1> [#uses=1]
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br i1 %10, label %bb72, label %read_mismatch
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bb72: ; preds = %bb71
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%11 = icmp eq i32 undef, %9 ; <i1> [#uses=1]
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br i1 %11, label %bb73, label %read_mismatch
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bb73: ; preds = %bb72
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call void %7(i64* null, i32 %5) nounwind
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unreachable
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bb74: ; preds = %bb75
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%12 = add i32 %13, 1 ; <i32> [#uses=1]
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br label %bb75
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bb75: ; preds = %bb74, %bb65
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%13 = phi i32 [ %12, %bb74 ], [ 0, %bb65 ] ; <i32> [#uses=2]
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%tmp386 = add i32 0, 27328512 ; <i32> [#uses=1]
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%14 = shl i32 1, %13 ; <i32> [#uses=1]
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%15 = load i32* undef, align 4 ; <i32> [#uses=1]
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%16 = and i32 %15, %14 ; <i32> [#uses=1]
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%17 = icmp eq i32 %16, 0 ; <i1> [#uses=1]
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br i1 %17, label %bb74, label %bb71
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bb80: ; preds = %bb78.preheader
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unreachable
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read_fatal: ; preds = %read_mismatch, %bb3.i156, %bb58
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br i1 undef, label %return, label %bb25
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rewrite: ; preds = %bb60, %bb51
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store i32 -1, i32* getelementptr inbounds (%struct.__gcov_var* @__gcov_var, i32 0, i32 6), align 4
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br i1 undef, label %bb94, label %bb119.preheader
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bb94: ; preds = %rewrite
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unreachable
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bb119.preheader: ; preds = %rewrite
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br i1 undef, label %read_mismatch, label %bb98
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bb98: ; preds = %bb119.preheader
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br label %read_mismatch
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return: ; preds = %read_fatal, %entry
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ret void
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bb49.1: ; preds = %bb48, %bb25
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br i1 undef, label %bb49.2, label %bb48.2
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bb49.2: ; preds = %bb48.2, %bb49.1
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br i1 undef, label %bb49.3, label %bb48.3
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bb48.2: ; preds = %bb49.1
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br label %bb49.2
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bb49.3: ; preds = %bb48.3, %bb49.2
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br i1 undef, label %bb51, label %bb48.4
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bb48.3: ; preds = %bb49.2
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br label %bb49.3
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bb48.4: ; preds = %bb49.3
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br label %bb51
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}
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declare i32 @__gcov_read_unsigned() nounwind
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declare void @llvm.memset.i32(i8* nocapture, i8, i32, i32) nounwind
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