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llvm-6502/test/Other/constant-fold-gep.ll
Mehdi Amini c94da20917 Make DataLayout Non-Optional in the Module 
Summary:
DataLayout keeps the string used for its creation.

As a side effect it is no longer needed in the Module.
This is "almost" NFC, the string is no longer
canonicalized, you can't rely on two "equals" DataLayout
having the same string returned by getStringRepresentation().

Get rid of DataLayoutPass: the DataLayout is in the Module

The DataLayout is "per-module", let's enforce this by not
duplicating it more than necessary.
One more step toward non-optionality of the DataLayout in the
module.

Make DataLayout Non-Optional in the Module

Module->getDataLayout() will never returns nullptr anymore.

Reviewers: echristo

Subscribers: resistor, llvm-commits, jholewinski

Differential Revision: http://reviews.llvm.org/D7992

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231270 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-04 18:43:29 +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* 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* null
; OPT: @G1 = global i1* null
; OPT: @F8 = global i8* inttoptr (i64 -1 to i8*)
; OPT: @F1 = global i1* inttoptr (i64 -1 to i1*)
; OPT: @H8 = global i8* inttoptr (i64 -1 to i8*)
; OPT: @H1 = global i1* inttoptr (i64 -1 to i1*)
; 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 18480
; OPT: @b = constant i64 8
; OPT: @c = constant i64 16
; OPT: @d = constant i64 88
; OPT: @e = constant i64 16
; OPT: @f = constant i64 1
; OPT: @g = constant i64 8
; OPT: @h = constant i64 8
; OPT: @i = constant i64 8
; 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* inttoptr (i64 8 to i64*)
; OPT: @N = constant i64* inttoptr (i64 8 to i64*)
; OPT: @O = constant i64* inttoptr (i64 8 to i64*)
; 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 inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 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() #0 {
; PLAIN: %t = bitcast i8* getelementptr (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* 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* 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* 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* null, i32 -1) to i8*
; PLAIN: ret i8* %t
; PLAIN: }
; PLAIN: define i1* @hoo1() #0 {
; PLAIN: %t = bitcast i1* getelementptr (i1* null, i32 -1) to i1*
; PLAIN: ret i1* %t
; PLAIN: }
; OPT: define i8* @goo8() #0 {
; OPT: ret i8* null
; OPT: }
; OPT: define i1* @goo1() #0 {
; OPT: ret i1* null
; OPT: }
; OPT: define i8* @foo8() #0 {
; OPT: ret i8* inttoptr (i64 -1 to i8*)
; OPT: }
; OPT: define i1* @foo1() #0 {
; OPT: ret i1* inttoptr (i64 -1 to i1*)
; OPT: }
; OPT: define i8* @hoo8() #0 {
; OPT: ret i8* inttoptr (i64 -1 to i8*)
; OPT: }
; OPT: define i1* @hoo1() #0 {
; OPT: ret i1* inttoptr (i64 -1 to i1*)
; OPT: }
; TO: define i8* @goo8() #0 {
; TO: ret i8* null
; TO: }
; TO: define i1* @goo1() #0 {
; TO: ret i1* null
; TO: }
; TO: define i8* @foo8() #0 {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @foo1() #0 {
; TO: ret i1* inttoptr (i64 -1 to i1*)
; TO: }
; TO: define i8* @hoo8() #0 {
; TO: ret i8* inttoptr (i64 -1 to i8*)
; TO: }
; TO: define i1* @hoo1() #0 {
; 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 + 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 + 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 + 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 + 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* 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() #0 {
; 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() #0 {
; 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() #0 {
; 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() #0 {
; 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() #0 {
; 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() #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 }* 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** 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* }* null, i64 0, i32 1) to i64) to i64
; PLAIN: ret i64 %t
; PLAIN: }
; OPT: define i64 @fa() #0 {
; OPT: ret i64 18480
; OPT: }
; OPT: define i64 @fb() #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fc() #0 {
; OPT: ret i64 16
; OPT: }
; OPT: define i64 @fd() #0 {
; OPT: ret i64 88
; OPT: }
; OPT: define i64 @fe() #0 {
; OPT: ret i64 16
; OPT: }
; OPT: define i64 @ff() #0 {
; OPT: ret i64 1
; OPT: }
; OPT: define i64 @fg() #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fh() #0 {
; OPT: ret i64 8
; OPT: }
; OPT: define i64 @fi() #0 {
; OPT: ret i64 8
; OPT: }
; TO: define i64 @fa() #0 {
; TO: ret i64 18480
; TO: }
; TO: define i64 @fb() #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fc() #0 {
; TO: ret i64 16
; TO: }
; TO: define i64 @fd() #0 {
; TO: ret i64 88
; TO: }
; TO: define i64 @fe() #0 {
; TO: ret i64 16
; TO: }
; TO: define i64 @ff() #0 {
; TO: ret i64 1
; TO: }
; TO: define i64 @fg() #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fh() #0 {
; TO: ret i64 8
; TO: }
; TO: define i64 @fi() #0 {
; 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() #0 {
; PLAIN: %t = bitcast i64* getelementptr (i64* null, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; PLAIN: define i64* @fN() #0 {
; PLAIN: %t = bitcast i64* getelementptr ({ 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]* null, i32 0, i32 1) to i64*
; PLAIN: ret i64* %t
; PLAIN: }
; OPT: define i64* @fM() #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; OPT: define i64* @fN() #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; OPT: define i64* @fO() #0 {
; OPT: ret i64* inttoptr (i64 8 to i64*)
; OPT: }
; TO: define i64* @fM() #0 {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fN() #0 {
; TO: ret i64* inttoptr (i64 8 to i64*)
; TO: }
; TO: define i64* @fO() #0 {
; 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: --> 8
; SCEV: Classifying expressions for: @fN
; SCEV: %t = bitcast i64* getelementptr ({ i64, i64 }* null, i32 0, i32 1) to i64*
; SCEV: --> 8
; SCEV: Classifying expressions for: @fO
; SCEV: %t = bitcast i64* getelementptr ([2 x i64]* null, i32 0, i32 1) to i64*
; SCEV: --> 8
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() #0 {
; 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() #0 {
; OPT: ret i32* getelementptr inbounds ([3 x { i32, i32 }]* @ext, i64 0, i64 1, i32 1)
; OPT: }
; TO: define i32* @fZ() #0 {
; 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: --> (12 + @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
}
; 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]* 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]* @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]* @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]* @gv2, i32 0, i32 0), i32* getelementptr inbounds ([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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