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llvm-6502/test/Other/constant-fold-gep.ll
Dan Gohman 97b44f9b80 Use ConstantExpr::getExtractElement when constant-folding vectors 
instead of getAggregateElement. This has the advantage of being
more consistent and allowing higher-level constant folding to
procede even if an inner extract element cannot be folded.

Make ConstantFoldInstruction call ConstantFoldConstantExpression
on the instruction's operands, making it more consistent with 
ConstantFoldConstantExpression itself. This makes sure that
ConstantExprs get TargetData-aware folding before being handed
off as operands for further folding.

This causes more expressions to be folded, but due to a known
shortcoming in constant folding, this currently has the side effect
of stripping a few more nuw and inbounds flags in the non-targetdata
side of constant-fold-gep.ll. This is mostly harmless.

This fixes rdar://11324230.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155682 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-27 00:54:36 +00:00

449 lines
20 KiB
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; "PLAIN" - No optimizations. This tests the target-independent
; constant folder.
; RUN: opt -S -o - < %s | FileCheck --check-prefix=PLAIN %s
; "OPT" - Optimizations but no targetdata. This tests target-independent
; folding in the optimizers.
; RUN: opt -S -o - -instcombine -globalopt < %s | FileCheck --check-prefix=OPT %s
; "TO" - Optimizations and targetdata. This tests target-dependent
; folding in the optimizers.
; RUN: opt -S -o - -instcombine -globalopt -default-data-layout="e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64" < %s | FileCheck --check-prefix=TO %s
; "SCEV" - ScalarEvolution but no targetdata.
; RUN: opt -analyze -scalar-evolution < %s | FileCheck --check-prefix=SCEV %s
; The automatic constant folder in opt does not have targetdata access, so
; it can't fold gep arithmetic, in general. However, the constant folder run
; from instcombine and global opt can use targetdata.
; PLAIN: @G8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1)
; PLAIN: @G1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1)
; PLAIN: @F8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2)
; PLAIN: @F1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2)
; PLAIN: @H8 = global i8* getelementptr (i8* null, i32 -1)
; PLAIN: @H1 = global i1* getelementptr (i1* null, i32 -1)
; OPT: @G8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1)
; OPT: @G1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1)
; OPT: @F8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2)
; OPT: @F1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2)
; OPT: @H8 = global i8* getelementptr (i8* null, i32 -1)
; OPT: @H1 = global i1* getelementptr (i1* null, i32 -1)
; TO: @G8 = global i8* null
; TO: @G1 = global i1* null
; TO: @F8 = global i8* inttoptr (i64 -1 to i8*)
; TO: @F1 = global i1* inttoptr (i64 -1 to i1*)
; TO: @H8 = global i8* inttoptr (i64 -1 to i8*)
; TO: @H1 = global i1* inttoptr (i64 -1 to i1*)
@G8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1)
@G1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1)
@F8 = global i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2)
@F1 = global i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2)
@H8 = global i8* getelementptr (i8* inttoptr (i32 0 to i8*), i32 -1)
@H1 = global i1* getelementptr (i1* inttoptr (i32 0 to i1*), i32 -1)
; The target-independent folder should be able to do some clever
; simplifications on sizeof, alignof, and offsetof expressions. The
; target-dependent folder should fold these down to constants.
; PLAIN: @a = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310)
; PLAIN: @b = constant i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; PLAIN: @c = constant i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2)
; PLAIN: @d = constant i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 11)
; PLAIN: @e = constant i64 ptrtoint (double* getelementptr ({ double, float, double, double }* null, i64 0, i32 2) to i64)
; PLAIN: @f = constant i64 1
; PLAIN: @g = constant i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; PLAIN: @h = constant i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
; PLAIN: @i = constant i64 ptrtoint (i1** getelementptr ({ i1, i1* }* null, i64 0, i32 1) to i64)
; OPT: @a = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310)
; OPT: @b = constant i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; OPT: @c = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2)
; OPT: @d = constant i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 11)
; OPT: @e = constant i64 ptrtoint (double* getelementptr ({ double, float, double, double }* null, i64 0, i32 2) to i64)
; OPT: @f = constant i64 1
; OPT: @g = constant i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; OPT: @h = constant i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
; OPT: @i = constant i64 ptrtoint (i1** getelementptr ({ i1, i1* }* null, i64 0, i32 1) to i64)
; TO: @a = constant i64 18480
; TO: @b = constant i64 8
; TO: @c = constant i64 16
; TO: @d = constant i64 88
; TO: @e = constant i64 16
; TO: @f = constant i64 1
; TO: @g = constant i64 8
; TO: @h = constant i64 8
; TO: @i = constant i64 8
@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))
@b = constant i64 ptrtoint ([13 x double]* getelementptr ({i1, [13 x double]}* null, i64 0, i32 1) to i64)
@c = constant i64 ptrtoint (double* getelementptr ({double, double, double, double}* null, i64 0, i32 2) to i64)
@d = constant i64 ptrtoint (double* getelementptr ([13 x double]* null, i64 0, i32 11) to i64)
@e = constant i64 ptrtoint (double* getelementptr ({double, float, double, double}* null, i64 0, i32 2) to i64)
@f = constant i64 ptrtoint (<{ i16, i128 }>* getelementptr ({i1, <{ i16, i128 }>}* null, i64 0, i32 1) to i64)
@g = constant i64 ptrtoint ({double, double}* getelementptr ({i1, {double, double}}* null, i64 0, i32 1) to i64)
@h = constant i64 ptrtoint (double** getelementptr (double** null, i64 1) to i64)
@i = constant i64 ptrtoint (double** getelementptr ({i1, double*}* null, i64 0, i32 1) to i64)
; The target-dependent folder should cast GEP indices to integer-sized pointers.
; PLAIN: @M = constant i64* getelementptr (i64* null, i32 1)
; PLAIN: @N = constant i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1)
; PLAIN: @O = constant i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
; OPT: @M = constant i64* getelementptr (i64* null, i32 1)
; OPT: @N = constant i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1)
; OPT: @O = constant i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
; TO: @M = constant i64* inttoptr (i64 8 to i64*)
; TO: @N = constant i64* inttoptr (i64 8 to i64*)
; TO: @O = constant i64* inttoptr (i64 8 to i64*)
@M = constant i64* getelementptr (i64* null, i32 1)
@N = constant i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1)
@O = constant i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
; Fold GEP of a GEP. Very simple cases are folded without targetdata.
; PLAIN: @Y = global [3 x { i32, i32 }]* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 2)
; PLAIN: @Z = global i32* getelementptr inbounds (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1)
; OPT: @Y = global [3 x { i32, i32 }]* getelementptr ([3 x { i32, i32 }]* @ext, i64 2)
; OPT: @Z = global i32* getelementptr (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1)
; TO: @Y = global [3 x { i32, i32 }]* getelementptr ([3 x { i32, i32 }]* @ext, i64 2)
; TO: @Z = global i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
@ext = external global [3 x { i32, i32 }]
@Y = global [3 x { i32, i32 }]* getelementptr inbounds ([3 x { i32, i32 }]* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 1), i64 1)
@Z = global i32* getelementptr inbounds (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1)
; Duplicate all of the above as function return values rather than
; global initializers.
; PLAIN: define i8* @goo8() nounwind {
; PLAIN: %t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @goo1() nounwind {
; PLAIN: %t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; PLAIN: define i8* @foo8() nounwind {
; PLAIN: %t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @foo1() nounwind {
; PLAIN: %t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; PLAIN: define i8* @hoo8() nounwind {
; PLAIN: %t = bitcast i8* getelementptr (i8* null, i32 -1) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @hoo1() nounwind {
; PLAIN: %t = bitcast i1* getelementptr (i1* null, i32 -1) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; OPT: define i8* @goo8() nounwind {
; OPT: ret i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1)
; OPT: }
; OPT: define i1* @goo1() nounwind {
; OPT: ret i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1)
; OPT: }
; OPT: define i8* @foo8() nounwind {
; OPT: ret i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2)
; OPT: }
; OPT: define i1* @foo1() nounwind {
; OPT: ret i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2)
; OPT: }
; OPT: define i8* @hoo8() nounwind {
; OPT: ret i8* getelementptr (i8* null, i32 -1)
; OPT: }
; OPT: define i1* @hoo1() nounwind {
; OPT: ret i1* getelementptr (i1* null, i32 -1)
; OPT: }
; TO: define i8* @goo8() nounwind {
; TO: ret i8* null
; TO: }
; TO: define i1* @goo1() nounwind {
; TO: ret i1* null
; TO: }
; TO: define i8* @foo8() nounwind {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @foo1() nounwind {
; TO: ret i1* inttoptr (i64 -1 to i1*)
; TO: }
; TO: define i8* @hoo8() nounwind {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @hoo1() nounwind {
; TO: ret i1* inttoptr (i64 -1 to i1*)
; TO: }
; SCEV: Classifying expressions for: @goo8
; SCEV: %t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
; SCEV: --> ((-1 * sizeof(i8)) + inttoptr (i32 1 to i8*))
; SCEV: Classifying expressions for: @goo1
; SCEV: %t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
; SCEV: --> ((-1 * sizeof(i1)) + inttoptr (i32 1 to i1*))
; SCEV: Classifying expressions for: @foo8
; SCEV: %t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
; SCEV: --> ((-2 * sizeof(i8)) + inttoptr (i32 1 to i8*))
; SCEV: Classifying expressions for: @foo1
; SCEV: %t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
; SCEV: --> ((-2 * sizeof(i1)) + inttoptr (i32 1 to i1*))
; SCEV: Classifying expressions for: @hoo8
; SCEV: --> (-1 * sizeof(i8))
; SCEV: Classifying expressions for: @hoo1
; SCEV: --> (-1 * sizeof(i1))
define i8* @goo8() nounwind {
%t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
ret i8* %t
}
define i1* @goo1() nounwind {
%t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
ret i1* %t
}
define i8* @foo8() nounwind {
%t = bitcast i8* getelementptr (i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
ret i8* %t
}
define i1* @foo1() nounwind {
%t = bitcast i1* getelementptr (i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
ret i1* %t
}
define i8* @hoo8() nounwind {
%t = bitcast i8* getelementptr (i8* inttoptr (i32 0 to i8*), i32 -1) to i8*
ret i8* %t
}
define i1* @hoo1() nounwind {
%t = bitcast i1* getelementptr (i1* inttoptr (i32 0 to i1*), i32 -1) to i1*
ret i1* %t
}
; PLAIN: define i64 @fa() nounwind {
; PLAIN: %t = bitcast i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fb() nounwind {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fc() nounwind {
; PLAIN: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fd() nounwind {
; PLAIN: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 11) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fe() nounwind {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ double, float, double, double }* null, i64 0, i32 2) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @ff() nounwind {
; PLAIN: %t = bitcast i64 1 to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fg() nounwind {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fh() nounwind {
; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fi() nounwind {
; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr ({ i1, i1* }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; OPT: define i64 @fa() nounwind {
; OPT: ret i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310)
; OPT: }
; OPT: define i64 @fb() nounwind {
; OPT: ret i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; OPT: }
; OPT: define i64 @fc() nounwind {
; OPT: ret i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2)
; OPT: }
; OPT: define i64 @fd() nounwind {
; OPT: ret i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 11)
; OPT: }
; OPT: define i64 @fe() nounwind {
; OPT: ret i64 ptrtoint (double* getelementptr ({ double, float, double, double }* null, i64 0, i32 2) to i64)
; OPT: }
; OPT: define i64 @ff() nounwind {
; OPT: ret i64 1
; OPT: }
; OPT: define i64 @fg() nounwind {
; OPT: ret i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64)
; OPT: }
; OPT: define i64 @fh() nounwind {
; OPT: ret i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64)
; OPT: }
; OPT: define i64 @fi() nounwind {
; OPT: ret i64 ptrtoint (i1** getelementptr ({ i1, i1* }* null, i64 0, i32 1) to i64)
; OPT: }
; TO: define i64 @fa() nounwind {
; TO: ret i64 18480
; TO: }
; TO: define i64 @fb() nounwind {
; TO: ret i64 8
; TO: }
; TO: define i64 @fc() nounwind {
; TO: ret i64 16
; TO: }
; TO: define i64 @fd() nounwind {
; TO: ret i64 88
; TO: }
; TO: define i64 @fe() nounwind {
; TO: ret i64 16
; TO: }
; TO: define i64 @ff() nounwind {
; TO: ret i64 1
; TO: }
; TO: define i64 @fg() nounwind {
; TO: ret i64 8
; TO: }
; TO: define i64 @fh() nounwind {
; TO: ret i64 8
; TO: }
; TO: define i64 @fi() nounwind {
; TO: ret i64 8
; TO: }
; SCEV: Classifying expressions for: @fa
; SCEV: %t = bitcast i64 mul (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2310) to i64
; SCEV: --> (2310 * sizeof(double))
; SCEV: Classifying expressions for: @fb
; SCEV: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64) to i64
; SCEV: --> alignof(double)
; SCEV: Classifying expressions for: @fc
; SCEV: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 2) to i64
; SCEV: --> (2 * sizeof(double))
; SCEV: Classifying expressions for: @fd
; SCEV: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double* null, i32 1) to i64), i64 11) to i64
; SCEV: --> (11 * sizeof(double))
; SCEV: Classifying expressions for: @fe
; SCEV: %t = bitcast i64 ptrtoint (double* getelementptr ({ double, float, double, double }* null, i64 0, i32 2) to i64) to i64
; SCEV: --> offsetof({ double, float, double, double }, 2)
; SCEV: Classifying expressions for: @ff
; SCEV: %t = bitcast i64 1 to i64
; SCEV: --> 1
; SCEV: Classifying expressions for: @fg
; SCEV: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }* null, i64 0, i32 1) to i64) to i64
; SCEV: --> alignof(double)
; SCEV: Classifying expressions for: @fh
; SCEV: %t = bitcast i64 ptrtoint (i1** getelementptr (i1** null, i32 1) to i64) to i64
; SCEV: --> sizeof(i1*)
; SCEV: Classifying expressions for: @fi
; SCEV: %t = bitcast i64 ptrtoint (i1** getelementptr ({ i1, i1* }* null, i64 0, i32 1) to i64) to i64
; SCEV: --> alignof(i1*)
define i64 @fa() nounwind {
%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
ret i64 %t
}
define i64 @fb() nounwind {
%t = bitcast i64 ptrtoint ([13 x double]* getelementptr ({i1, [13 x double]}* null, i64 0, i32 1) to i64) to i64
ret i64 %t
}
define i64 @fc() nounwind {
%t = bitcast i64 ptrtoint (double* getelementptr ({double, double, double, double}* null, i64 0, i32 2) to i64) to i64
ret i64 %t
}
define i64 @fd() nounwind {
%t = bitcast i64 ptrtoint (double* getelementptr ([13 x double]* null, i64 0, i32 11) to i64) to i64
ret i64 %t
}
define i64 @fe() nounwind {
%t = bitcast i64 ptrtoint (double* getelementptr ({double, float, double, double}* null, i64 0, i32 2) to i64) to i64
ret i64 %t
}
define i64 @ff() nounwind {
%t = bitcast i64 ptrtoint (<{ i16, i128 }>* getelementptr ({i1, <{ i16, i128 }>}* null, i64 0, i32 1) to i64) to i64
ret i64 %t
}
define i64 @fg() nounwind {
%t = bitcast i64 ptrtoint ({double, double}* getelementptr ({i1, {double, double}}* null, i64 0, i32 1) to i64) to i64
ret i64 %t
}
define i64 @fh() nounwind {
%t = bitcast i64 ptrtoint (double** getelementptr (double** null, i32 1) to i64) to i64
ret i64 %t
}
define i64 @fi() nounwind {
%t = bitcast i64 ptrtoint (double** getelementptr ({i1, double*}* null, i64 0, i32 1) to i64) to i64
ret i64 %t
}
; PLAIN: define i64* @fM() nounwind {
; PLAIN: %t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; PLAIN: define i64* @fN() nounwind {
; PLAIN: %t = bitcast i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; PLAIN: define i64* @fO() nounwind {
; PLAIN: %t = bitcast i64* getelementptr ([2 x i64]* null, i32 0, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; OPT: define i64* @fM() nounwind {
; OPT: ret i64* getelementptr (i64* null, i32 1)
; OPT: }
; OPT: define i64* @fN() nounwind {
; OPT: ret i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1)
; OPT: }
; OPT: define i64* @fO() nounwind {
; OPT: ret i64* getelementptr ([2 x i64]* null, i32 0, i32 1)
; OPT: }
; TO: define i64* @fM() nounwind {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fN() nounwind {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fO() nounwind {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; SCEV: Classifying expressions for: @fM
; SCEV: %t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
; SCEV: --> sizeof(i64)
; SCEV: Classifying expressions for: @fN
; SCEV: %t = bitcast i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1) to i64*
; SCEV: --> sizeof(i64)
; SCEV: Classifying expressions for: @fO
; SCEV: %t = bitcast i64* getelementptr ([2 x i64]* null, i32 0, i32 1) to i64*
; SCEV: --> sizeof(i64)
define i64* @fM() nounwind {
%t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
ret i64* %t
}
define i64* @fN() nounwind {
%t = bitcast i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1) to i64*
ret i64* %t
}
define i64* @fO() nounwind {
%t = bitcast i64* getelementptr ([2 x i64]* null, i32 0, i32 1) to i64*
ret i64* %t
}
; PLAIN: define i32* @fZ() nounwind {
; PLAIN: %t = bitcast i32* getelementptr inbounds (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
; PLAIN: ret i32* %t
; PLAIN: }
; OPT: define i32* @fZ() nounwind {
; OPT: ret i32* getelementptr (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1)
; OPT: }
; TO: define i32* @fZ() nounwind {
; TO: ret i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
; TO: }
; SCEV: Classifying expressions for: @fZ
; SCEV: %t = bitcast i32* getelementptr inbounds (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
; SCEV: --> ((3 * sizeof(i32)) + @ext)
define i32* @fZ() nounwind {
%t = bitcast i32* getelementptr inbounds (i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
ret i32* %t
}
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