forked from OSchip/llvm-project
Canonicalize sizeof and alignof on pointer types to a canonical
pointer type. llvm-svn: 95769
This commit is contained in:
Dan Gohman
parent
e69b99baaf
commit
183a423af9
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@ -361,6 +361,15 @@ static Constant *getFoldedSizeOf(const Type *Ty, const Type *DestTy,
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}
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}
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// Pointer size doesn't depend on the pointee type, so canonicalize them
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// to an arbitrary pointee.
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if (const PointerType *PTy = dyn_cast<PointerType>(Ty))
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if (!PTy->getElementType()->isInteger(1))
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return
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getFoldedSizeOf(PointerType::get(IntegerType::get(PTy->getContext(), 1),
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PTy->getAddressSpace()),
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DestTy, true);
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// If there's no interesting folding happening, bail so that we don't create
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// a constant that looks like it needs folding but really doesn't.
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if (!Folded)
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@ -417,6 +426,16 @@ static Constant *getFoldedAlignOf(const Type *Ty, const Type *DestTy,
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return MemberAlign;
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}
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// Pointer alignment doesn't depend on the pointee type, so canonicalize them
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// to an arbitrary pointee.
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if (const PointerType *PTy = dyn_cast<PointerType>(Ty))
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if (!PTy->getElementType()->isInteger(1))
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return
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getFoldedAlignOf(PointerType::get(IntegerType::get(PTy->getContext(),
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1),
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PTy->getAddressSpace()),
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DestTy, true);
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// If there's no interesting folding happening, bail so that we don't create
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// a constant that looks like it needs folding but really doesn't.
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if (!Folded)
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@ -19,10 +19,12 @@
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; PLAIN: %0 = type { i1, double }
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; PLAIN: %1 = type { double, float, double, double }
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; PLAIN: %2 = type { i64, i64 }
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; PLAIN: %2 = type { i1, i1* }
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; PLAIN: %3 = type { i64, i64 }
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; OPT: %0 = type { i1, double }
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; OPT: %1 = type { double, float, double, double }
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; OPT: %2 = type { i64, i64 }
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; OPT: %2 = type { i1, i1* }
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; OPT: %3 = type { i64, i64 }
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; The automatic constant folder in opt does not have targetdata access, so
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; it can't fold gep arithmetic, in general. However, the constant folder run
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@ -65,6 +67,8 @@
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; PLAIN: @e = constant i64 ptrtoint (double* getelementptr (%1* null, i64 0, i32 2) to i64)
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; PLAIN: @f = constant i64 1
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; PLAIN: @g = constant i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; PLAIN: @h = constant i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
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; PLAIN: @i = constant i64 ptrtoint (i1** getelementptr (%2* null, i64 0, i32 1) to i64)
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; OPT: @a = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310)
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; OPT: @b = constant i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; OPT: @c = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2)
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@ -72,6 +76,8 @@
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; OPT: @e = constant i64 ptrtoint (double* getelementptr (%1* null, i64 0, i32 2) to i64)
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; OPT: @f = constant i64 1
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; OPT: @g = constant i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; OPT: @h = constant i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
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; OPT: @i = constant i64 ptrtoint (i1** getelementptr (%2* null, i64 0, i32 1) to i64)
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; TO: @a = constant i64 18480
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; TO: @b = constant i64 8
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; TO: @c = constant i64 16
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@ -79,6 +85,8 @@
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; TO: @e = constant i64 16
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; TO: @f = constant i64 1
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; TO: @g = constant i64 8
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; TO: @h = constant i64 8
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; TO: @i = constant i64 8
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@a = constant i64 mul (i64 3, i64 mul (i64 ptrtoint ({[7 x double], [7 x double]}* getelementptr ({[7 x double], [7 x double]}* null, i64 11) to i64), i64 5))
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@b = constant i64 ptrtoint ([13 x double]* getelementptr ({i1, [13 x double]}* null, i64 0, i32 1) to i64)
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@ -87,14 +95,16 @@
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@e = constant i64 ptrtoint (double* getelementptr ({double, float, double, double}* null, i64 0, i32 2) to i64)
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@f = constant i64 ptrtoint (<{ i16, i128 }>* getelementptr ({i1, <{ i16, i128 }>}* null, i64 0, i32 1) to i64)
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@g = constant i64 ptrtoint ({double, double}* getelementptr ({i1, {double, double}}* null, i64 0, i32 1) to i64)
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@h = constant i64 ptrtoint (double** getelementptr (double** null, i64 1) to i64)
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@i = constant i64 ptrtoint (double** getelementptr ({i1, double*}* null, i64 0, i32 1) to i64)
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; The target-dependent folder should cast GEP indices to integer-sized pointers.
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; PLAIN: @M = constant i64* getelementptr (i64* null, i32 1)
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; PLAIN: @N = constant i64* getelementptr (%2* null, i32 0, i32 1)
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; PLAIN: @N = constant i64* getelementptr (%3* null, i32 0, i32 1)
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; PLAIN: @O = constant i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
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; OPT: @M = constant i64* getelementptr (i64* null, i32 1)
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; OPT: @N = constant i64* getelementptr (%2* null, i32 0, i32 1)
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; OPT: @N = constant i64* getelementptr (%3* null, i32 0, i32 1)
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; OPT: @O = constant i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
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; TO: @M = constant i64* inttoptr (i64 8 to i64*)
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; TO: @N = constant i64* inttoptr (i64 8 to i64*)
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@ -237,6 +247,14 @@ define i1* @hoo1() nounwind {
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; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; PLAIN: ret i64 %t
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; PLAIN: }
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; PLAIN: define i64 @fh() nounwind {
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; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
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; PLAIN: ret i64 %t
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; PLAIN: }
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; PLAIN: define i64 @fi() nounwind {
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; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr (%2* null, i64 0, i32 1) to i64)
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; PLAIN: ret i64 %t
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; PLAIN: }
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; OPT: define i64 @fa() nounwind {
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; OPT: ret i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310)
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; OPT: }
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@ -258,6 +276,12 @@ define i1* @hoo1() nounwind {
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; OPT: define i64 @fg() nounwind {
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; OPT: ret i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; OPT: }
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; OPT: define i64 @fh() nounwind {
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; OPT: ret i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
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; OPT: }
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; OPT: define i64 @fi() nounwind {
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; OPT: ret i64 ptrtoint (i1** getelementptr (%2* null, i64 0, i32 1) to i64)
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; OPT: }
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; TO: define i64 @fa() nounwind {
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; TO: ret i64 18480
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; TO: }
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@ -279,6 +303,12 @@ define i1* @hoo1() nounwind {
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; TO: define i64 @fg() nounwind {
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; TO: ret i64 8
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; TO: }
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; TO: define i64 @fh() nounwind {
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; TO: ret i64 8
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; TO: }
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; TO: define i64 @fi() nounwind {
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; TO: ret i64 8
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; TO: }
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; SCEV: Classifying expressions for: @fa
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; SCEV: %t = bitcast i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310) to i64
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; SCEV: --> (2310 * sizeof(double))
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@ -300,6 +330,12 @@ define i1* @hoo1() nounwind {
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; SCEV: Classifying expressions for: @fg
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; SCEV: %t = bitcast i64 ptrtoint (double* getelementptr (%0* null, i64 0, i32 1) to i64)
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; SCEV: --> alignof(double)
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; SCEV: Classifying expressions for: @fh
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; SCEV: %t = bitcast i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
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; SCEV: --> sizeof(i1*)
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; SCEV: Classifying expressions for: @fi
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; SCEV: %t = bitcast i64 ptrtoint (i1** getelementptr (%2* null, i64 0, i32 1) to i64)
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; SCEV: --> alignof(i1*)
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define i64 @fa() nounwind {
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%t = bitcast i64 mul (i64 3, i64 mul (i64 ptrtoint ({[7 x double], [7 x double]}* getelementptr ({[7 x double], [7 x double]}* null, i64 11) to i64), i64 5)) to i64
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@ -329,13 +365,21 @@ define i64 @fg() nounwind {
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%t = bitcast i64 ptrtoint ({double, double}* getelementptr ({i1, {double, double}}* null, i64 0, i32 1) to i64) to i64
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ret i64 %t
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}
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define i64 @fh() nounwind {
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%t = bitcast i64 ptrtoint (double** getelementptr (double** null, i32 1) to i64) to i64
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ret i64 %t
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}
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define i64 @fi() nounwind {
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%t = bitcast i64 ptrtoint (double** getelementptr ({i1, double*}* null, i64 0, i32 1) to i64) to i64
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ret i64 %t
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}
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; PLAIN: define i64* @fM() nounwind {
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; PLAIN: %t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
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; PLAIN: ret i64* %t
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; PLAIN: }
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; PLAIN: define i64* @fN() nounwind {
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; PLAIN: %t = bitcast i64* getelementptr (%2* null, i32 0, i32 1) to i64*
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; PLAIN: %t = bitcast i64* getelementptr (%3* null, i32 0, i32 1) to i64*
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; PLAIN: ret i64* %t
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; PLAIN: }
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; PLAIN: define i64* @fO() nounwind {
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@ -346,7 +390,7 @@ define i64 @fg() nounwind {
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; OPT: ret i64* getelementptr (i64* null, i32 1)
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; OPT: }
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; OPT: define i64* @fN() nounwind {
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; OPT: ret i64* getelementptr (%2* null, i32 0, i32 1)
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; OPT: ret i64* getelementptr (%3* null, i32 0, i32 1)
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; OPT: }
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; OPT: define i64* @fO() nounwind {
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; OPT: ret i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
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@ -364,7 +408,7 @@ define i64 @fg() nounwind {
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; SCEV: %t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
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; SCEV: --> sizeof(i64)
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; SCEV: Classifying expressions for: @fN
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; SCEV: %t = bitcast i64* getelementptr (%2* null, i32 0, i32 1) to i64*
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; SCEV: %t = bitcast i64* getelementptr (%3* null, i32 0, i32 1) to i64*
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; SCEV: --> sizeof(i64)
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; SCEV: Classifying expressions for: @fO
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; SCEV: %t = bitcast i64* getelementptr ([2 x i64]* null, i32 0, i32 1) to i64*
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