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llvm-mirror/test/Other/constant-fold-gep.ll
Peter Collingbourne 5dcb77e9fb IR: Introduce local_unnamed_addr attribute. 
If a local_unnamed_addr attribute is attached to a global, the address
is known to be insignificant within the module. It is distinct from the
existing unnamed_addr attribute in that it only describes a local property
of the module rather than a global property of the symbol.

This attribute is intended to be used by the code generator and LTO to allow
the linker to decide whether the global needs to be in the symbol table. It is
possible to exclude a global from the symbol table if three things are true:
- This attribute is present on every instance of the global (which means that
  the normal rule that the global must have a unique address can be broken without
  being observable by the program by performing comparisons against the global's
  address)
- The global has linkonce_odr linkage (which means that each linkage unit must have
  its own copy of the global if it requires one, and the copy in each linkage unit
  must be the same)
- It is a constant or a function (which means that the program cannot observe that
  the unique-address rule has been broken by writing to the global)

Although this attribute could in principle be computed from the module
contents, LTO clients (i.e. linkers) will normally need to be able to compute
this property as part of symbol resolution, and it would be inefficient to
materialize every module just to compute it.

See:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160509/356401.html
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20160516/356738.html
for earlier discussion.

Part of the fix for PR27553.

Differential Revision: http://reviews.llvm.org/D20348

llvm-svn: 272709
2016-06-14 21:01:22 +00:00

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; "PLAIN" - No optimizations. This tests the default target layout
; constant folder.
; RUN: opt -S -o - < %s | FileCheck --check-prefix=PLAIN %s
; "OPT" - Optimizations but no targetdata. This tests default target layout
; 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 with default target layout
; 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, i8* inttoptr (i32 1 to i8*), i32 -1)
; PLAIN: @G1 = global i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -1)
; PLAIN: @F8 = global i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -2)
; PLAIN: @F1 = global i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -2)
; PLAIN: @H8 = global i8* getelementptr (i8, i8* null, i32 -1)
; PLAIN: @H1 = global i1* getelementptr (i1, i1* null, i32 -1)
; OPT: @G8 = local_unnamed_addr global i8* null
; OPT: @G1 = local_unnamed_addr global i1* null
; OPT: @F8 = local_unnamed_addr global i8* inttoptr (i64 -1 to i8*)
; OPT: @F1 = local_unnamed_addr global i1* inttoptr (i64 -1 to i1*)
; OPT: @H8 = local_unnamed_addr global i8* inttoptr (i64 -1 to i8*)
; OPT: @H1 = local_unnamed_addr global i1* inttoptr (i64 -1 to i1*)
; TO: @G8 = local_unnamed_addr global i8* null
; TO: @G1 = local_unnamed_addr global i1* null
; TO: @F8 = local_unnamed_addr global i8* inttoptr (i64 -1 to i8*)
; TO: @F1 = local_unnamed_addr global i1* inttoptr (i64 -1 to i1*)
; TO: @H8 = local_unnamed_addr global i8* inttoptr (i64 -1 to i8*)
; TO: @H1 = local_unnamed_addr global i1* inttoptr (i64 -1 to i1*)
@G8 = global i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -1)
@G1 = global i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -1)
@F8 = global i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -2)
@F1 = global i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -2)
@H8 = global i8* getelementptr (i8, i8* inttoptr (i32 0 to i8*), i32 -1)
@H1 = global i1* getelementptr (i1, 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, double* null, i32 1) to i64), i64 2310)
; PLAIN: @b = constant i64 ptrtoint (double* getelementptr ({ i1, double }, { i1, double }* null, i64 0, i32 1) to i64)
; PLAIN: @c = constant i64 mul nuw (i64 ptrtoint (double* getelementptr (double, double* null, i32 1) to i64), i64 2)
; PLAIN: @d = constant i64 mul nuw (i64 ptrtoint (double* getelementptr (double, double* null, i32 1) to i64), i64 11)
; PLAIN: @e = constant i64 ptrtoint (double* getelementptr ({ double, float, double, double }, { 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 }, { i1, double }* null, i64 0, i32 1) to i64)
; PLAIN: @h = constant i64 ptrtoint (i1** getelementptr (i1*, i1** null, i32 1) to i64)
; PLAIN: @i = constant i64 ptrtoint (i1** getelementptr ({ i1, i1* }, { i1, i1* }* null, i64 0, i32 1) to i64)
; OPT: @a = local_unnamed_addr constant i64 18480
; OPT: @b = local_unnamed_addr constant i64 8
; OPT: @c = local_unnamed_addr constant i64 16
; OPT: @d = local_unnamed_addr constant i64 88
; OPT: @e = local_unnamed_addr constant i64 16
; OPT: @f = local_unnamed_addr constant i64 1
; OPT: @g = local_unnamed_addr constant i64 8
; OPT: @h = local_unnamed_addr constant i64 8
; OPT: @i = local_unnamed_addr constant i64 8
; TO: @a = local_unnamed_addr constant i64 18480
; TO: @b = local_unnamed_addr constant i64 8
; TO: @c = local_unnamed_addr constant i64 16
; TO: @d = local_unnamed_addr constant i64 88
; TO: @e = local_unnamed_addr constant i64 16
; TO: @f = local_unnamed_addr constant i64 1
; TO: @g = local_unnamed_addr constant i64 8
; TO: @h = local_unnamed_addr constant i64 8
; TO: @i = local_unnamed_addr 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]}, {[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]}, {i1, [13 x double]}* null, i64 0, i32 1) to i64)
@c = constant i64 ptrtoint (double* getelementptr ({double, double, double, double}, {double, double, double, double}* null, i64 0, i32 2) to i64)
@d = constant i64 ptrtoint (double* getelementptr ([13 x double], [13 x double]* null, i64 0, i32 11) to i64)
@e = constant i64 ptrtoint (double* getelementptr ({double, float, double, double}, {double, float, double, double}* null, i64 0, i32 2) to i64)
@f = constant i64 ptrtoint (<{ i16, i128 }>* getelementptr ({i1, <{ i16, i128 }>}, {i1, <{ i16, i128 }>}* null, i64 0, i32 1) to i64)
@g = constant i64 ptrtoint ({double, double}* getelementptr ({i1, {double, double}}, {i1, {double, double}}* null, i64 0, i32 1) to i64)
@h = constant i64 ptrtoint (double** getelementptr (double*, double** null, i64 1) to i64)
@i = constant i64 ptrtoint (double** getelementptr ({i1, double*}, {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, i64* null, i32 1)
; PLAIN: @N = constant i64* getelementptr ({ i64, i64 }, { i64, i64 }* null, i32 0, i32 1)
; PLAIN: @O = constant i64* getelementptr ([2 x i64], [2 x i64]* null, i32 0, i32 1)
; OPT: @M = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
; OPT: @N = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
; OPT: @O = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
; TO: @M = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
; TO: @N = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
; TO: @O = local_unnamed_addr constant i64* inttoptr (i64 8 to i64*)
@M = constant i64* getelementptr (i64, i64* null, i32 1)
@N = constant i64* getelementptr ({ i64, i64 }, { i64, i64 }* null, i32 0, i32 1)
@O = constant i64* getelementptr ([2 x i64], [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 }], [3 x { i32, i32 }]* @ext, i64 2)
; PLAIN: @Z = global i32* getelementptr inbounds (i32, i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1)
; OPT: @Y = local_unnamed_addr global [3 x { i32, i32 }]* getelementptr ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 2)
; OPT: @Z = local_unnamed_addr global i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
; TO: @Y = local_unnamed_addr global [3 x { i32, i32 }]* getelementptr ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 2)
; TO: @Z = local_unnamed_addr global i32* getelementptr inbounds ([3 x { i32, i32 }], [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 }], [3 x { i32, i32 }]* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 1), i64 1)
@Z = global i32* getelementptr inbounds (i32, i32* getelementptr inbounds ([3 x { i32, i32 }], [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() #0 {
; PLAIN: %t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @goo1() #0 {
; PLAIN: %t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; PLAIN: define i8* @foo8() #0 {
; PLAIN: %t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @foo1() #0 {
; PLAIN: %t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; PLAIN: define i8* @hoo8() #0 {
; PLAIN: %t = bitcast i8* getelementptr (i8, i8* null, i32 -1) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @hoo1() #0 {
; PLAIN: %t = bitcast i1* getelementptr (i1, i1* null, i32 -1) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; OPT: define i8* @goo8() local_unnamed_addr #0 {
; OPT: ret i8* null
; OPT: }
; OPT: define i1* @goo1() local_unnamed_addr #0 {
; OPT: ret i1* null
; OPT: }
; OPT: define i8* @foo8() local_unnamed_addr #0 {
; OPT: ret i8* inttoptr (i64 -1 to i8*)
; OPT: }
; OPT: define i1* @foo1() local_unnamed_addr #0 {
; OPT: ret i1* inttoptr (i64 -1 to i1*)
; OPT: }
; OPT: define i8* @hoo8() local_unnamed_addr #0 {
; OPT: ret i8* inttoptr (i64 -1 to i8*)
; OPT: }
; OPT: define i1* @hoo1() local_unnamed_addr #0 {
; OPT: ret i1* inttoptr (i64 -1 to i1*)
; OPT: }
; TO: define i8* @goo8() local_unnamed_addr #0 {
; TO: ret i8* null
; TO: }
; TO: define i1* @goo1() local_unnamed_addr #0 {
; TO: ret i1* null
; TO: }
; TO: define i8* @foo8() local_unnamed_addr #0 {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @foo1() local_unnamed_addr #0 {
; TO: ret i1* inttoptr (i64 -1 to i1*)
; TO: }
; TO: define i8* @hoo8() local_unnamed_addr #0 {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @hoo1() local_unnamed_addr #0 {
; TO: ret i1* inttoptr (i64 -1 to i1*)
; TO: }
; SCEV: Classifying expressions for: @goo8
; SCEV: %t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
; SCEV: --> (-1 + inttoptr (i32 1 to i8*))
; SCEV: Classifying expressions for: @goo1
; SCEV: %t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
; SCEV: --> (-1 + inttoptr (i32 1 to i1*))
; SCEV: Classifying expressions for: @foo8
; SCEV: %t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
; SCEV: --> (-2 + inttoptr (i32 1 to i8*))
; SCEV: Classifying expressions for: @foo1
; SCEV: %t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
; SCEV: --> (-2 + inttoptr (i32 1 to i1*))
; SCEV: Classifying expressions for: @hoo8
; SCEV: --> -1
; SCEV: Classifying expressions for: @hoo1
; SCEV: --> -1
define i8* @goo8() nounwind {
%t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -1) to i8*
ret i8* %t
}
define i1* @goo1() nounwind {
%t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -1) to i1*
ret i1* %t
}
define i8* @foo8() nounwind {
%t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 1 to i8*), i32 -2) to i8*
ret i8* %t
}
define i1* @foo1() nounwind {
%t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 1 to i1*), i32 -2) to i1*
ret i1* %t
}
define i8* @hoo8() nounwind {
%t = bitcast i8* getelementptr (i8, i8* inttoptr (i32 0 to i8*), i32 -1) to i8*
ret i8* %t
}
define i1* @hoo1() nounwind {
%t = bitcast i1* getelementptr (i1, i1* inttoptr (i32 0 to i1*), i32 -1) to i1*
ret i1* %t
}
; PLAIN: define i64 @fa() #0 {
; PLAIN: %t = bitcast i64 mul (i64 ptrtoint (double* getelementptr (double, double* null, i32 1) to i64), i64 2310) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fb() #0 {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }, { i1, double }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fc() #0 {
; PLAIN: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double, double* null, i32 1) to i64), i64 2) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fd() #0 {
; PLAIN: %t = bitcast i64 mul nuw (i64 ptrtoint (double* getelementptr (double, double* null, i32 1) to i64), i64 11) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fe() #0 {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ double, float, double, double }, { double, float, double, double }* null, i64 0, i32 2) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @ff() #0 {
; PLAIN: %t = bitcast i64 1 to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fg() #0 {
; PLAIN: %t = bitcast i64 ptrtoint (double* getelementptr ({ i1, double }, { i1, double }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fh() #0 {
; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr (i1*, i1** null, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; PLAIN: define i64 @fi() #0 {
; PLAIN: %t = bitcast i64 ptrtoint (i1** getelementptr ({ i1, i1* }, { i1, i1* }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; OPT: define i64 @fa() local_unnamed_addr #0 {
; OPT: ret i64 18480
; OPT: }
; OPT: define i64 @fb() local_unnamed_addr #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fc() local_unnamed_addr #0 {
; OPT: ret i64 16
; OPT: }
; OPT: define i64 @fd() local_unnamed_addr #0 {
; OPT: ret i64 88
; OPT: }
; OPT: define i64 @fe() local_unnamed_addr #0 {
; OPT: ret i64 16
; OPT: }
; OPT: define i64 @ff() local_unnamed_addr #0 {
; OPT: ret i64 1
; OPT: }
; OPT: define i64 @fg() local_unnamed_addr #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fh() local_unnamed_addr #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fi() local_unnamed_addr #0 {
; OPT: ret i64 8
; OPT: }
; TO: define i64 @fa() local_unnamed_addr #0 {
; TO: ret i64 18480
; TO: }
; TO: define i64 @fb() local_unnamed_addr #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fc() local_unnamed_addr #0 {
; TO: ret i64 16
; TO: }
; TO: define i64 @fd() local_unnamed_addr #0 {
; TO: ret i64 88
; TO: }
; TO: define i64 @fe() local_unnamed_addr #0 {
; TO: ret i64 16
; TO: }
; TO: define i64 @ff() local_unnamed_addr #0 {
; TO: ret i64 1
; TO: }
; TO: define i64 @fg() local_unnamed_addr #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fh() local_unnamed_addr #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fi() local_unnamed_addr #0 {
; TO: ret i64 8
; TO: }
; SCEV: Classifying expressions for: @fa
; SCEV: %t = bitcast i64 mul (i64 ptrtoint (double* getelementptr (double, 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 }, { 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, 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, 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 }, { 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 }, { 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*, 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* }, { 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]}, {[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]}, {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}, {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], [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}, {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 }>}, {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}}, {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*, double** null, i32 1) to i64) to i64
ret i64 %t
}
define i64 @fi() nounwind {
%t = bitcast i64 ptrtoint (double** getelementptr ({i1, double*}, {i1, double*}* null, i64 0, i32 1) to i64) to i64
ret i64 %t
}
; PLAIN: define i64* @fM() #0 {
; PLAIN: %t = bitcast i64* getelementptr (i64, i64* null, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; PLAIN: define i64* @fN() #0 {
; PLAIN: %t = bitcast i64* getelementptr ({ i64, i64 }, { i64, i64 }* null, i32 0, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; PLAIN: define i64* @fO() #0 {
; PLAIN: %t = bitcast i64* getelementptr ([2 x i64], [2 x i64]* null, i32 0, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; OPT: define i64* @fM() local_unnamed_addr #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; OPT: define i64* @fN() local_unnamed_addr #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; OPT: define i64* @fO() local_unnamed_addr #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; TO: define i64* @fM() local_unnamed_addr #0 {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fN() local_unnamed_addr #0 {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fO() local_unnamed_addr #0 {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; SCEV: Classifying expressions for: @fM
; SCEV: %t = bitcast i64* getelementptr (i64, i64* null, i32 1) to i64*
; SCEV: --> 8
; SCEV: Classifying expressions for: @fN
; SCEV: %t = bitcast i64* getelementptr ({ i64, i64 }, { i64, i64 }* null, i32 0, i32 1) to i64*
; SCEV: --> 8
; SCEV: Classifying expressions for: @fO
; SCEV: %t = bitcast i64* getelementptr ([2 x i64], [2 x i64]* null, i32 0, i32 1) to i64*
; SCEV: --> 8
define i64* @fM() nounwind {
%t = bitcast i64* getelementptr (i64, i64* null, i32 1) to i64*
ret i64* %t
}
define i64* @fN() nounwind {
%t = bitcast i64* getelementptr ({ i64, i64 }, { i64, i64 }* null, i32 0, i32 1) to i64*
ret i64* %t
}
define i64* @fO() nounwind {
%t = bitcast i64* getelementptr ([2 x i64], [2 x i64]* null, i32 0, i32 1) to i64*
ret i64* %t
}
; PLAIN: define i32* @fZ() #0 {
; PLAIN: %t = bitcast i32* getelementptr inbounds (i32, i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
; PLAIN: ret i32* %t
; PLAIN: }
; OPT: define i32* @fZ() local_unnamed_addr #0 {
; OPT: ret i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
; OPT: }
; TO: define i32* @fZ() local_unnamed_addr #0 {
; TO: ret i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
; TO: }
; SCEV: Classifying expressions for: @fZ
; SCEV: %t = bitcast i32* getelementptr inbounds (i32, i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
; SCEV: --> (12 + @ext)
define i32* @fZ() nounwind {
%t = bitcast i32* getelementptr inbounds (i32, i32* getelementptr inbounds ([3 x { i32, i32 }], [3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 0), i64 1) to i32*
ret i32* %t
}
; PR15262 - Check GEP folding with casts between address spaces.
@p0 = global [4 x i8] zeroinitializer, align 1
@p12 = addrspace(12) global [4 x i8] zeroinitializer, align 1
define i8* @different_addrspace() nounwind noinline {
; OPT: different_addrspace
%p = getelementptr inbounds i8, i8* addrspacecast ([4 x i8] addrspace(12)* @p12 to i8*),
i32 2
ret i8* %p
; OPT: ret i8* getelementptr ([4 x i8], [4 x i8]* addrspacecast ([4 x i8] addrspace(12)* @p12 to [4 x i8]*), i64 0, i64 2)
}
define i8* @same_addrspace() nounwind noinline {
; OPT: same_addrspace
%p = getelementptr inbounds i8, i8* bitcast ([4 x i8] * @p0 to i8*), i32 2
ret i8* %p
; OPT: ret i8* getelementptr inbounds ([4 x i8], [4 x i8]* @p0, i64 0, i64 2)
}
@gv1 = internal global i32 1
@gv2 = internal global [1 x i32] [ i32 2 ]
@gv3 = internal global [1 x i32] [ i32 2 ]
; Handled by TI-independent constant folder
define i1 @gv_gep_vs_gv() {
ret i1 icmp eq (i32* getelementptr inbounds ([1 x i32], [1 x i32]* @gv2, i32 0, i32 0), i32* @gv1)
}
; PLAIN: gv_gep_vs_gv
; PLAIN: ret i1 false
define i1 @gv_gep_vs_gv_gep() {
ret i1 icmp eq (i32* getelementptr inbounds ([1 x i32], [1 x i32]* @gv2, i32 0, i32 0), i32* getelementptr inbounds ([1 x i32], [1 x i32]* @gv3, i32 0, i32 0))
}
; PLAIN: gv_gep_vs_gv_gep
; PLAIN: ret i1 false
; CHECK: attributes #0 = { nounwind }
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