mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-08 06:32:24 +00:00
18b1f4e769
very small but very important bugfix:
bool shouldExplore(Use *U) {
Value *V = U->get();
if (isa<CallInst>(V) || isa<InvokeInst>(V))
[...]
should have read:
bool shouldExplore(Use *U) {
Value *V = U->getUser();
if (isa<CallInst>(V) || isa<InvokeInst>(V))
Fixes PR14143!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166407 91177308-0d34-0410-b5e6-96231b3b80d8
41 lines
1.1 KiB
LLVM
41 lines
1.1 KiB
LLVM
; RUN: opt %s -tailcallelim -S | FileCheck %s
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declare void @use(i8* nocapture, i8* nocapture)
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declare void @boring()
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define i8* @test1(i8* nocapture %A, i1 %cond) {
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; CHECK: tailrecurse:
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; CHECK: %A.tr = phi i8* [ %A, %0 ], [ %B, %cond_true ]
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; CHECK: %cond.tr = phi i1 [ %cond, %0 ], [ false, %cond_true ]
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%B = alloca i8
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; CHECK: %B = alloca i8
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br i1 %cond, label %cond_true, label %cond_false
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; CHECK: br i1 %cond.tr, label %cond_true, label %cond_false
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cond_true:
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; CHECK: cond_true:
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; CHECK: br label %tailrecurse
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call i8* @test1(i8* %B, i1 false)
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ret i8* null
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cond_false:
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; CHECK: cond_false
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call void @use(i8* %A, i8* %B)
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; CHECK: call void @use(i8* %A.tr, i8* %B)
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call void @boring()
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; CHECK: tail call void @boring()
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ret i8* null
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; CHECK: ret i8* null
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}
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; PR14143
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define void @test2(i8* %a, i8* %b) {
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; CHECK: @test2
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; CHECK-NOT: tail call
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; CHECK: ret void
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%c = alloca [100 x i8], align 16
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%tmp = bitcast [100 x i8]* %c to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %tmp, i64 100, i32 1, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i32, i1)
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