4d9bb8d594
To support non-aligned accesses we introduce a virtual element size for arrays that divides each access function used for this array. The adjustment of the access function based on the element size of the array was therefore moved after this virtual element size was determined, thus after all accesses have been created. Differential Revision: http://reviews.llvm.org/D17246 llvm-svn: 261226
77 lines
3.1 KiB
LLVM
77 lines
3.1 KiB
LLVM
; RUN: opt %loadPolly -analyze -polly-scops %s | FileCheck %s --check-prefix=SCOP
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; RUN: opt %loadPolly -S -polly-codegen %s | FileCheck %s
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;
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; The offset of the %tmp1 load wrt. to %buff (62 bytes) is not divisible
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; by the type size (i32 = 4 bytes), thus we will have to represent %buff
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; with a smaller type. In this case i16 is sufficient to represent the
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; 62 byte offset accurately.
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;
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; SCOP: Invariant Accesses: {
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; SCOP: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; SCOP: { Stmt_if_end_6[] -> MemRef_buff[o0] : 31 <= o0 <= 32 };
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; SCOP: Execution Context: { : }
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; SCOP: }
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; SCOP: Arrays {
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; SCOP: i16 MemRef_buff[*]; // Element size 2
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; SCOP: i32 MemRef_key_0; // Element size 4
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; SCOP: }
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;
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; CHECK-LABEL: polly.preload.begin:
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; CHECK-NEXT: %polly.access.cast.buff = bitcast i8* %buff to i16*
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; CHECK-NEXT: %polly.access.buff = getelementptr i16, i16* %polly.access.cast.buff, i64 31
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; CHECK-NEXT: %polly.access.buff.cast = bitcast i16* %polly.access.buff to i32*
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; CHECK-NEXT: %polly.access.buff.load = load i32, i32* %polly.access.buff.cast, align 4
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; CHECK-NEXT: store i32 %polly.access.buff.load, i32* %tmp1.preload.s2a
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; Function Attrs: nounwind uwtable
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define void @sudecrypt(i8* %buff) #0 {
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entry:
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br i1 undef, label %cleanup, label %if.end
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if.end: ; preds = %entry
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br i1 undef, label %if.end.6, label %if.then.5
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if.then.5: ; preds = %if.end
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unreachable
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if.end.6: ; preds = %if.end
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%add.ptr = getelementptr inbounds i8, i8* %buff, i64 62
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%tmp = bitcast i8* %add.ptr to i32*
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%tmp1 = load i32, i32* %tmp, align 4, !tbaa !1
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br i1 false, label %if.then.13, label %switch.early.test
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switch.early.test: ; preds = %if.end.6
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switch i32 0, label %if.end.16 [
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i32 956, label %if.then.13
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i32 520, label %if.then.13
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]
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if.then.13: ; preds = %switch.early.test, %switch.early.test, %if.end.6
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br label %if.end.16
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if.end.16: ; preds = %if.then.13, %switch.early.test
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%key.0 = phi i32 [ undef, %if.then.13 ], [ 0, %switch.early.test ]
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br i1 undef, label %if.end.34, label %if.then.19
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if.then.19: ; preds = %if.end.16
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unreachable
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if.end.34: ; preds = %if.end.16
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unreachable
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cleanup: ; preds = %entry
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ret void
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}
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attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.ident = !{!0}
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!0 = !{!"clang version 3.8.0 (trunk 250010) (llvm/trunk 250018)"}
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!1 = !{!2, !2, i64 0}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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