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https://github.com/c64scene-ar/llvm-6502.git
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07adb85cb7
tracked. Instead of trying to manually keep track of these locations while doing complex modifications, just recompute them when they're needed. This fixes a bug in which the TopMBB and BotMBB were not correctly updated, leading to invalid transformations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84598 91177308-0d34-0410-b5e6-96231b3b80d8
73 lines
2.4 KiB
LLVM
73 lines
2.4 KiB
LLVM
; RUN: llc -verify-loop-info -verify-dom-info -march=x86-64 < %s
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; PR5243
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@.str96 = external constant [37 x i8], align 8 ; <[37 x i8]*> [#uses=1]
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define void @foo() nounwind {
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bb:
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br label %ybb1
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ybb1: ; preds = %yybb13, %xbb6, %bb
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switch i32 undef, label %bb18 [
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i32 150, label %ybb2
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i32 151, label %bb17
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i32 152, label %bb19
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i32 157, label %ybb8
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]
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ybb2: ; preds = %ybb1
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%tmp = icmp eq i8** undef, null ; <i1> [#uses=1]
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br i1 %tmp, label %bb3, label %xbb6
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bb3: ; preds = %ybb2
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unreachable
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xbb4: ; preds = %xbb6
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store i32 0, i32* undef, align 8
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br i1 undef, label %xbb6, label %bb5
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bb5: ; preds = %xbb4
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call fastcc void @decl_mode_check_failed() nounwind
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unreachable
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xbb6: ; preds = %xbb4, %ybb2
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%tmp7 = icmp slt i32 undef, 0 ; <i1> [#uses=1]
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br i1 %tmp7, label %xbb4, label %ybb1
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ybb8: ; preds = %ybb1
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%tmp9 = icmp eq i8** undef, null ; <i1> [#uses=1]
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br i1 %tmp9, label %bb10, label %ybb12
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bb10: ; preds = %ybb8
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%tmp11 = load i8** undef, align 8 ; <i8*> [#uses=1]
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call void (i8*, ...)* @fatal(i8* getelementptr inbounds ([37 x i8]* @.str96, i64 0, i64 0), i8* %tmp11) nounwind
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unreachable
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ybb12: ; preds = %ybb8
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br i1 undef, label %bb15, label %ybb13
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ybb13: ; preds = %ybb12
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%tmp14 = icmp sgt i32 undef, 0 ; <i1> [#uses=1]
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br i1 %tmp14, label %bb16, label %ybb1
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bb15: ; preds = %ybb12
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call void (i8*, ...)* @fatal(i8* getelementptr inbounds ([37 x i8]* @.str96, i64 0, i64 0), i8* undef) nounwind
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unreachable
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bb16: ; preds = %ybb13
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unreachable
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bb17: ; preds = %ybb1
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unreachable
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bb18: ; preds = %ybb1
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unreachable
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bb19: ; preds = %ybb1
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unreachable
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}
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declare void @fatal(i8*, ...)
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declare fastcc void @decl_mode_check_failed() nounwind
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