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0ba4f918b6
GlobalOpt implements a heap SROA (SROA for an malloc allocatated struct or array
of structs) which is largely undertested (heap-sra-[1234].ll are basically the
same test with very little difference) and does not trigger at all when
bootstrapping clang (it only supports the case of one single store).
The heap SROA implementation causes PR50027 (GEP is not properly handled; crash or miscompile).
Just drop the implementation. I have deleted some obviously duplicated tests
but kept `heap-sra-[12]{,-no-nullopt}.ll`.
Reviewed By: aeubanks
Differential Revision: https://reviews.llvm.org/D102257
46 lines
1.7 KiB
LLVM
46 lines
1.7 KiB
LLVM
; RUN: opt < %s -globalopt -S | FileCheck %s
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target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
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;; Heap SROA has been removed. This tests we don't perform heap SROA.
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; CHECK: @X =
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%struct.foo = type { i32, i32 }
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@X = internal global %struct.foo* null ; <%struct.foo**> [#uses=2]
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define void @bar(i32 %Size) nounwind noinline {
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entry:
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%malloccall = tail call i8* @malloc(i64 8000000) ; <i8*> [#uses=1]
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%0 = bitcast i8* %malloccall to [1000000 x %struct.foo]* ; <[1000000 x %struct.foo]*> [#uses=1]
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%.sub = getelementptr [1000000 x %struct.foo], [1000000 x %struct.foo]* %0, i32 0, i32 0 ; <%struct.foo*> [#uses=1]
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store %struct.foo* %.sub, %struct.foo** @X, align 4
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ret void
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}
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declare noalias i8* @malloc(i64)
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define i32 @baz() nounwind readonly noinline {
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bb1.thread:
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%0 = load %struct.foo*, %struct.foo** @X, align 4 ; <%struct.foo*> [#uses=1]
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br label %bb1
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bb1: ; preds = %bb1, %bb1.thread
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%i.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %indvar.next, %bb1 ] ; <i32> [#uses=2]
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%sum.0.reg2mem.0 = phi i32 [ 0, %bb1.thread ], [ %3, %bb1 ] ; <i32> [#uses=1]
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%1 = getelementptr %struct.foo, %struct.foo* %0, i32 %i.0.reg2mem.0, i32 0 ; <i32*> [#uses=1]
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%2 = load i32, i32* %1, align 4 ; <i32> [#uses=1]
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%3 = add i32 %2, %sum.0.reg2mem.0 ; <i32> [#uses=2]
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%indvar.next = add i32 %i.0.reg2mem.0, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, 1200 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb2, label %bb1
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bb2: ; preds = %bb1
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ret i32 %3
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}
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define void @bam(i64 %Size) nounwind noinline #0 {
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entry:
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%0 = load %struct.foo*, %struct.foo** @X, align 4
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ret void
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}
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attributes #0 = { null_pointer_is_valid }
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