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https://github.com/c64scene-ar/llvm-6502.git
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da65822cfc
remove RemoveDuplicateSuccessor, as it is no longer necessary, and because it breaks assumptions made in MachineBasicBlock::isOnlyReachableByFallthrough. Convert test/CodeGen/X86/omit-label.ll to FileCheck and add a testcase for PR4732. test/CodeGen/Thumb2/thumb2-ifcvt2.ll sees a diff with this commit due to it being bugpoint-reduced to the point where it doesn't matter what the condition for the branch is. Add some more interesting code to test/CodeGen/X86/2009-08-06-branchfolder-crash.ll, which is the testcase that originally motivated the RemoveDuplicateSuccessor code, to help verify that the original problem isn't being re-broken. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79338 91177308-0d34-0410-b5e6-96231b3b80d8
94 lines
2.5 KiB
LLVM
94 lines
2.5 KiB
LLVM
; RUN: llvm-as < %s | llc -mtriple=thumbv7-apple-darwin | FileCheck %s
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define void @foo(i32 %X, i32 %Y) {
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entry:
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; CHECK: foo:
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; CHECK: it ne
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; CHECK: cmpne
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; CHECK: it hi
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; CHECK: pophi {r7, pc}
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%tmp1 = icmp ult i32 %X, 4 ; <i1> [#uses=1]
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%tmp4 = icmp eq i32 %Y, 0 ; <i1> [#uses=1]
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%tmp7 = or i1 %tmp4, %tmp1 ; <i1> [#uses=1]
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br i1 %tmp7, label %cond_true, label %UnifiedReturnBlock
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cond_true: ; preds = %entry
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%tmp10 = tail call i32 (...)* @bar( ) ; <i32> [#uses=0]
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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declare i32 @bar(...)
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; FIXME: Need post-ifcvt branch folding to get rid of the extra br at end of BB1.
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%struct.quad_struct = type { i32, i32, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct* }
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define fastcc i32 @CountTree(%struct.quad_struct* %tree) {
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entry:
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; CHECK: CountTree:
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; CHECK: it eq
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; CHECK: cmpeq
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; CHECK: beq.n
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; CHECK: itt eq
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; CHECK: moveq
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; CHECK: popeq
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br label %tailrecurse
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tailrecurse: ; preds = %bb, %entry
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%tmp6 = load %struct.quad_struct** null ; <%struct.quad_struct*> [#uses=1]
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%tmp9 = load %struct.quad_struct** null ; <%struct.quad_struct*> [#uses=2]
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%tmp12 = load %struct.quad_struct** null ; <%struct.quad_struct*> [#uses=1]
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%tmp14 = icmp eq %struct.quad_struct* null, null ; <i1> [#uses=1]
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%tmp17 = icmp eq %struct.quad_struct* %tmp6, null ; <i1> [#uses=1]
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%tmp23 = icmp eq %struct.quad_struct* %tmp9, null ; <i1> [#uses=1]
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%tmp29 = icmp eq %struct.quad_struct* %tmp12, null ; <i1> [#uses=1]
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%bothcond = and i1 %tmp17, %tmp14 ; <i1> [#uses=1]
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%bothcond1 = and i1 %bothcond, %tmp23 ; <i1> [#uses=1]
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%bothcond2 = and i1 %bothcond1, %tmp29 ; <i1> [#uses=1]
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br i1 %bothcond2, label %return, label %bb
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bb: ; preds = %tailrecurse
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%tmp41 = tail call fastcc i32 @CountTree( %struct.quad_struct* %tmp9 ) ; <i32> [#uses=0]
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br label %tailrecurse
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return: ; preds = %tailrecurse
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ret i32 0
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}
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%struct.SString = type { i8*, i32, i32 }
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declare void @abort()
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define fastcc void @t1(%struct.SString* %word, i8 signext %c) {
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entry:
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; CHECK: t1:
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; CHECK: it ne
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; CHECK: popne {r7, pc}
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%tmp1 = icmp eq %struct.SString* %word, null ; <i1> [#uses=1]
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br i1 %tmp1, label %cond_true, label %cond_false
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cond_true: ; preds = %entry
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tail call void @abort( )
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unreachable
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cond_false: ; preds = %entry
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ret void
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}
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define fastcc void @t2() nounwind {
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entry:
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; CHECK: t2:
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; CHECK: cmp r0, #0
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; CHECK: beq.n
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br i1 undef, label %bb.i.i3, label %growMapping.exit
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bb.i.i3: ; preds = %entry
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unreachable
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growMapping.exit: ; preds = %entry
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unreachable
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}
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