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https://github.com/c64scene-ar/llvm-6502.git
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c94da20917
Summary: DataLayout keeps the string used for its creation. As a side effect it is no longer needed in the Module. This is "almost" NFC, the string is no longer canonicalized, you can't rely on two "equals" DataLayout having the same string returned by getStringRepresentation(). Get rid of DataLayoutPass: the DataLayout is in the Module The DataLayout is "per-module", let's enforce this by not duplicating it more than necessary. One more step toward non-optionality of the DataLayout in the module. Make DataLayout Non-Optional in the Module Module->getDataLayout() will never returns nullptr anymore. Reviewers: echristo Subscribers: resistor, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D7992 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
86 lines
1.8 KiB
LLVM
86 lines
1.8 KiB
LLVM
; RUN: opt -loop-reduce -S < %s | FileCheck %s
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;
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; Test LSR's use of SplitCriticalEdge during phi rewriting.
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target triple = "x86-apple-darwin"
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; Provide legal integer types.
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target datalayout = "n8:16:32:64"
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; Verify that identical edges are merged. rdar://problem/6453893
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; CHECK-LABEL: @test1(
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; CHECK: bb89:
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; CHECK: phi i8* [ %lsr.iv.next1, %bbA.bb89_crit_edge ], [ %lsr.iv.next1, %bbB.bb89_crit_edge ]{{$}}
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define i8* @test1() {
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entry:
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br label %loop
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loop:
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%rec = phi i32 [ %next, %loop ], [ 0, %entry ]
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%next = add i32 %rec, 1
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%tmp75 = getelementptr i8, i8* null, i32 %next
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br i1 false, label %loop, label %loopexit
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loopexit:
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br i1 false, label %bbA, label %bbB
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bbA:
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switch i32 0, label %bb89 [
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i32 47, label %bb89
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i32 58, label %bb89
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]
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bbB:
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switch i8 0, label %bb89 [
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i8 47, label %bb89
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i8 58, label %bb89
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]
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bb89:
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%tmp75phi = phi i8* [ %tmp75, %bbA ], [ %tmp75, %bbA ], [ %tmp75, %bbA ], [ %tmp75, %bbB ], [ %tmp75, %bbB ], [ %tmp75, %bbB ]
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br label %exit
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exit:
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ret i8* %tmp75phi
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}
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; Handle single-predecessor phis: PR13756
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; CHECK-LABEL: @test2(
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; CHECK: bb89:
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; CHECK: phi i8* [ %lsr.iv.next1, %bbA ], [ %lsr.iv.next1, %bbA ], [ %lsr.iv.next1, %bbA ]{{$}}
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define i8* @test2() {
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entry:
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br label %loop
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loop:
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%rec = phi i32 [ %next, %loop ], [ 0, %entry ]
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%next = add i32 %rec, 1
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%tmp75 = getelementptr i8, i8* null, i32 %next
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br i1 false, label %loop, label %loopexit
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loopexit:
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br i1 false, label %bbA, label %bbB
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bbA:
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switch i32 0, label %bb89 [
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i32 47, label %bb89
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i32 58, label %bb89
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]
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bbB:
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switch i8 0, label %exit [
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i8 47, label %exit
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i8 58, label %exit
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]
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bb89:
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%tmp75phi = phi i8* [ %tmp75, %bbA ], [ %tmp75, %bbA ], [ %tmp75, %bbA ]
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br label %exit
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exit:
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%result = phi i8* [ %tmp75phi, %bb89 ], [ %tmp75, %bbB ], [ %tmp75, %bbB ], [ %tmp75, %bbB ]
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ret i8* %result
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}
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