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https://github.com/c64scene-ar/llvm-6502.git
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bd1fccfad5
When folding a and(any_ext(load)) both the any_ext and the load have to have only a single use. This removes the anyext-uses.ll testcase which started failing because it is unreduced and unclear what it is testing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92950 91177308-0d34-0410-b5e6-96231b3b80d8
48 lines
1.5 KiB
LLVM
48 lines
1.5 KiB
LLVM
; RUN: llc < %s -march=x86 | FileCheck %s
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%struct._obstack_chunk = type { i8*, %struct._obstack_chunk*, [4 x i8] }
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%struct.obstack = type { i32, %struct._obstack_chunk*, i8*, i8*, i8*, i32, i32, %struct._obstack_chunk* (...)*, void (...)*, i8*, i8 }
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@stmt_obstack = external global %struct.obstack ; <%struct.obstack*> [#uses=1]
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; This should just not crash.
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define void @test1() nounwind {
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entry:
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br i1 true, label %cond_true, label %cond_next
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cond_true: ; preds = %entry
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%new_size.0.i = select i1 false, i32 0, i32 0 ; <i32> [#uses=1]
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%tmp.i = load i32* bitcast (i8* getelementptr (%struct.obstack* @stmt_obstack, i32 0, i32 10) to i32*) ; <i32> [#uses=1]
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%tmp.i.upgrd.1 = trunc i32 %tmp.i to i8 ; <i8> [#uses=1]
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%tmp21.i = and i8 %tmp.i.upgrd.1, 1 ; <i8> [#uses=1]
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%tmp22.i = icmp eq i8 %tmp21.i, 0 ; <i1> [#uses=1]
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br i1 %tmp22.i, label %cond_false30.i, label %cond_true23.i
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cond_true23.i: ; preds = %cond_true
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ret void
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cond_false30.i: ; preds = %cond_true
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%tmp35.i = tail call %struct._obstack_chunk* null( i32 %new_size.0.i ) ; <%struct._obstack_chunk*> [#uses=0]
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ret void
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cond_next: ; preds = %entry
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ret void
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}
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define i32 @test2(i16* %P, i16* %Q) nounwind {
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%A = load i16* %P, align 4 ; <i16> [#uses=11]
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%C = zext i16 %A to i32 ; <i32> [#uses=1]
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%D = and i32 %C, 255 ; <i32> [#uses=1]
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br label %L
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L:
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store i16 %A, i16* %Q
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ret i32 %D
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; CHECK: test2:
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; CHECK: movl 4(%esp), %eax
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; CHECK-NEXT: movzwl (%eax), %ecx
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}
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