test/Other/constant-fold-gep-address-spaces.ll - llvm-project/llvm - Git at Google

 ; "PLAIN" - No optimizations. This tests the target-independent
 ; constant folder.
 ; RUN: opt -S -o - %s | FileCheck --check-prefix=PLAIN %s

 target datalayout = "e-p:128:128:128-p1:32:32:32-p2:8:8:8-p3:16:16:16-p4:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"

 ; 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 ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1)
 @G8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1)
 ; PLAIN: @G1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -1)
 @G1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -1)
 ; PLAIN: @F8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2)
 @F8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2)
 ; PLAIN: @F1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -2)
 @F1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -2)
 ; PLAIN: @H8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) null, i32 -1)
 @H8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 0 to ptr addrspace(1)), i32 -1)
 ; PLAIN: @H1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i8 -1)
 @H1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 0 to ptr addrspace(2)), i8 -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-X: @a = constant i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2310)
 @a = constant i64 mul (i64 3, i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr ({[7 x double], [7 x double]}, ptr addrspace(4) null, i64 11) to i64), i64 5))

 ; PLAIN-X: @b = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64)
 @b = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, [13 x double]}, ptr addrspace(4) null, i64 0, i32 1) to i64)

 ; PLAIN-X: @c = constant i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2)
 @c = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({double, double, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64)

 ; PLAIN-X: @d = constant i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 11)
 @d = constant i64 ptrtoint (ptr addrspace(4) getelementptr ([13 x double], ptr addrspace(4) null, i64 0, i32 11) to i64)

 ; PLAIN-X: @e = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ double, float, double, double }, ptr null, i64 0, i32 2) to i64)
 @e = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({double, float, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64)

 ; PLAIN-X: @f = constant i64 1
 @f = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, <{ i16, i128 }>}, ptr addrspace(4) null, i64 0, i32 1) to i64)

 ; PLAIN-X: @g = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64)
 @g = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, {double, double}}, ptr addrspace(4) null, i64 0, i32 1) to i64)

 ; PLAIN-X: @h = constant i64 ptrtoint (ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 1) to i64)
 @h = constant i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i64 1) to i64)

 ; PLAIN-X: @i = constant i64 ptrtoint (ptr addrspace(2) getelementptr ({ i1, ptr addrspace(2) }, ptr null, i64 0, i32 1) to i64)
 @i = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, double}, ptr addrspace(4) null, i64 0, i32 1) to i64)

 ; The target-dependent folder should cast GEP indices to integer-sized pointers.

 ; PLAIN: @M = constant ptr addrspace(4) getelementptr (i64, ptr addrspace(4) null, i32 1)
 ; PLAIN: @N = constant ptr addrspace(4) getelementptr ({ i64, i64 }, ptr addrspace(4) null, i32 0, i32 1)
 ; PLAIN: @O = constant ptr addrspace(4) getelementptr ([2 x i64], ptr addrspace(4) null, i32 0, i32 1)

 @M = constant ptr addrspace(4) getelementptr (i64, ptr addrspace(4) null, i32 1)
 @N = constant ptr addrspace(4) getelementptr ({ i64, i64 }, ptr addrspace(4) null, i32 0, i32 1)
 @O = constant ptr addrspace(4) getelementptr ([2 x i64], ptr addrspace(4) null, i32 0, i32 1)

 ; Fold GEP of a GEP. Very simple cases are folded.

 ; PLAIN-X: @Y = global ptraddrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptraddrspace(3) @ext, i64 2)
 @ext = external addrspace(3) global [3 x { i32, i32 }]
 @Y = global ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 1), i64 1)

 ; PLAIN-X: @Z = global ptraddrspace(3) getelementptr inbounds (i32, ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 0, i64 1, i32 0), i64 1)
 @Z = global ptr addrspace(3) getelementptr inbounds (i32, ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 0, i64 1, i32 0), i64 1)


 ; Duplicate all of the above as function return values rather than
 ; global initializers.

 ; PLAIN: define ptr addrspace(1) @goo8() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
 ; PLAIN:   ret ptr addrspace(1) %t
 ; PLAIN: }
 ; PLAIN: define ptr addrspace(2) @goo1() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
 ; PLAIN:   ret ptr addrspace(2) %t
 ; PLAIN: }
 ; PLAIN: define ptr addrspace(1) @foo8() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2) to ptr addrspace(1)
 ; PLAIN:   ret ptr addrspace(1) %t
 ; PLAIN: }
 ; PLAIN: define ptr addrspace(2) @foo1() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -2) to ptr addrspace(2)
 ; PLAIN:   ret ptr addrspace(2) %t
 ; PLAIN: }
 ; PLAIN: define ptr addrspace(1) @hoo8() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) null, i32 -1) to ptr addrspace(1)
 ; PLAIN:   ret ptr addrspace(1) %t
 ; PLAIN: }
 ; PLAIN: define ptr addrspace(2) @hoo1() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 -1) to ptr addrspace(2)
 ; PLAIN:   ret ptr addrspace(2) %t
 ; PLAIN: }
 define ptr addrspace(1) @goo8() #0 {
   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
   ret ptr addrspace(1) %t
 }
 define ptr addrspace(2) @goo1() #0 {
   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
   ret ptr addrspace(2) %t
 }
 define ptr addrspace(1) @foo8() #0 {
   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2) to ptr addrspace(1)
   ret ptr addrspace(1) %t
 }
 define ptr addrspace(2) @foo1() #0 {
   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -2) to ptr addrspace(2)
   ret ptr addrspace(2) %t
 }
 define ptr addrspace(1) @hoo8() #0 {
   %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 0 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
   ret ptr addrspace(1) %t
 }
 define ptr addrspace(2) @hoo1() #0 {
   %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 0 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
   ret ptr addrspace(2) %t
 }

 ; PLAIN-X: define i64 @fa() #0 {
 ; PLAIN-X:   %t = bitcast i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2310) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fb() #0 {
 ; PLAIN-X:   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fc() #0 {
 ; PLAIN-X:   %t = bitcast i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fd() #0 {
 ; PLAIN-X:   %t = bitcast i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 11) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fe() #0 {
 ; PLAIN-X:   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ double, float, double, double }, ptr null, i64 0, i32 2) to i64) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @ff() #0 {
 ; PLAIN-X:   %t = bitcast i64 1 to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fg() #0 {
 ; PLAIN-X:   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fh() #0 {
 ; PLAIN-X:   %t = bitcast i64 ptrtoint (ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 1) to i64) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 ; PLAIN-X: define i64 @fi() #0 {
 ; PLAIN-X:   %t = bitcast i64 ptrtoint (ptr addrspace(2) getelementptr ({ i1, ptr addrspace(2) }, ptr null, i64 0, i32 1) to i64) to i64
 ; PLAIN-X:   ret i64 %t
 ; PLAIN-X: }
 define i64 @fa() #0 {
   %t = bitcast i64 mul (i64 3, i64 mul (i64 ptrtoint (ptr getelementptr ({[7 x double], [7 x double]}, ptr null, i64 11) to i64), i64 5)) to i64
   ret i64 %t
 }
 define i64 @fb() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, [13 x double]}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
   ret i64 %t
 }
 define i64 @fc() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({double, double, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64) to i64
   ret i64 %t
 }
 define i64 @fd() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ([13 x double], ptr addrspace(4) null, i64 0, i32 11) to i64) to i64
   ret i64 %t
 }
 define i64 @fe() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({double, float, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64) to i64
   ret i64 %t
 }
 define i64 @ff() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, <{ i16, i128 }>}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
   ret i64 %t
 }
 define i64 @fg() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, {double, double}}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
   ret i64 %t
 }
 define i64 @fh() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64) to i64
   ret i64 %t
 }
 define i64 @fi() #0 {
   %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, double}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
   ret i64 %t
 }

 ; PLAIN: define ptr @fM() #0 {
 ; PLAIN:   %t = bitcast ptr getelementptr (i64, ptr null, i32 1) to ptr
 ; PLAIN:   ret ptr %t
 ; PLAIN: }
 ; PLAIN: define ptr @fN() #0 {
 ; PLAIN:   %t = bitcast ptr getelementptr ({ i64, i64 }, ptr null, i32 0, i32 1) to ptr
 ; PLAIN:   ret ptr %t
 ; PLAIN: }
 ; PLAIN: define ptr @fO() #0 {
 ; PLAIN:   %t = bitcast ptr getelementptr ([2 x i64], ptr null, i32 0, i32 1) to ptr
 ; PLAIN:   ret ptr %t
 ; PLAIN: }

 define ptr @fM() #0 {
   %t = bitcast ptr getelementptr (i64, ptr null, i32 1) to ptr
   ret ptr %t
 }
 define ptr @fN() #0 {
   %t = bitcast ptr getelementptr ({ i64, i64 }, ptr null, i32 0, i32 1) to ptr
   ret ptr %t
 }
 define ptr @fO() #0 {
   %t = bitcast ptr getelementptr ([2 x i64], ptr null, i32 0, i32 1) to ptr
   ret ptr %t
 }

 ; PLAIN: define ptr addrspace(1) @fZ() #0 {
 ; PLAIN:   %t = bitcast ptr addrspace(1) getelementptr inbounds (i32, ptr addrspace(1) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(1) @ext2, i64 0, i64 1, i32 0), i64 1) to ptr addrspace(1)
 ; PLAIN:   ret ptr addrspace(1) %t
 ; PLAIN: }
 @ext2 = external addrspace(1) global [3 x { i32, i32 }]
 define ptr addrspace(1) @fZ() #0 {
   %t = bitcast ptr addrspace(1) getelementptr inbounds (i32, ptr addrspace(1) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(1) @ext2, i64 0, i64 1, i32 0), i64 1) to ptr addrspace(1)
   ret ptr addrspace(1) %t
 }

 attributes #0 = { nounwind }
	; "PLAIN" - No optimizations. This tests the target-independent
	; constant folder.
	; RUN: opt -S -o - %s \| FileCheck --check-prefix=PLAIN %s

	target datalayout = "e-p:128:128:128-p1:32:32:32-p2:8:8:8-p3:16:16:16-p4:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:32"

	; 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 ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1)
	@G8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1)
	; PLAIN: @G1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -1)
	@G1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -1)
	; PLAIN: @F8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2)
	@F8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2)
	; PLAIN: @F1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -2)
	@F1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 1 to ptr addrspace(2)), i8 -2)
	; PLAIN: @H8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) null, i32 -1)
	@H8 = global ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 0 to ptr addrspace(1)), i32 -1)
	; PLAIN: @H1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i8 -1)
	@H1 = global ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i8 0 to ptr addrspace(2)), i8 -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-X: @a = constant i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2310)
	@a = constant i64 mul (i64 3, i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr ({[7 x double], [7 x double]}, ptr addrspace(4) null, i64 11) to i64), i64 5))

	; PLAIN-X: @b = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64)
	@b = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, [13 x double]}, ptr addrspace(4) null, i64 0, i32 1) to i64)

	; PLAIN-X: @c = constant i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2)
	@c = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({double, double, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64)

	; PLAIN-X: @d = constant i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 11)
	@d = constant i64 ptrtoint (ptr addrspace(4) getelementptr ([13 x double], ptr addrspace(4) null, i64 0, i32 11) to i64)

	; PLAIN-X: @e = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ double, float, double, double }, ptr null, i64 0, i32 2) to i64)
	@e = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({double, float, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64)

	; PLAIN-X: @f = constant i64 1
	@f = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, <{ i16, i128 }>}, ptr addrspace(4) null, i64 0, i32 1) to i64)

	; PLAIN-X: @g = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64)
	@g = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, {double, double}}, ptr addrspace(4) null, i64 0, i32 1) to i64)

	; PLAIN-X: @h = constant i64 ptrtoint (ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 1) to i64)
	@h = constant i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i64 1) to i64)

	; PLAIN-X: @i = constant i64 ptrtoint (ptr addrspace(2) getelementptr ({ i1, ptr addrspace(2) }, ptr null, i64 0, i32 1) to i64)
	@i = constant i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, double}, ptr addrspace(4) null, i64 0, i32 1) to i64)

	; The target-dependent folder should cast GEP indices to integer-sized pointers.

	; PLAIN: @M = constant ptr addrspace(4) getelementptr (i64, ptr addrspace(4) null, i32 1)
	; PLAIN: @N = constant ptr addrspace(4) getelementptr ({ i64, i64 }, ptr addrspace(4) null, i32 0, i32 1)
	; PLAIN: @O = constant ptr addrspace(4) getelementptr ([2 x i64], ptr addrspace(4) null, i32 0, i32 1)

	@M = constant ptr addrspace(4) getelementptr (i64, ptr addrspace(4) null, i32 1)
	@N = constant ptr addrspace(4) getelementptr ({ i64, i64 }, ptr addrspace(4) null, i32 0, i32 1)
	@O = constant ptr addrspace(4) getelementptr ([2 x i64], ptr addrspace(4) null, i32 0, i32 1)

	; Fold GEP of a GEP. Very simple cases are folded.

	; PLAIN-X: @Y = global ptraddrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptraddrspace(3) @ext, i64 2)
	@ext = external addrspace(3) global [3 x { i32, i32 }]
	@Y = global ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 1), i64 1)

	; PLAIN-X: @Z = global ptraddrspace(3) getelementptr inbounds (i32, ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 0, i64 1, i32 0), i64 1)
	@Z = global ptr addrspace(3) getelementptr inbounds (i32, ptr addrspace(3) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(3) @ext, i64 0, i64 1, i32 0), i64 1)


	; Duplicate all of the above as function return values rather than
	; global initializers.

	; PLAIN: define ptr addrspace(1) @goo8() #0 {
	; PLAIN: %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
	; PLAIN: ret ptr addrspace(1) %t
	; PLAIN: }
	; PLAIN: define ptr addrspace(2) @goo1() #0 {
	; PLAIN: %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
	; PLAIN: ret ptr addrspace(2) %t
	; PLAIN: }
	; PLAIN: define ptr addrspace(1) @foo8() #0 {
	; PLAIN: %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2) to ptr addrspace(1)
	; PLAIN: ret ptr addrspace(1) %t
	; PLAIN: }
	; PLAIN: define ptr addrspace(2) @foo1() #0 {
	; PLAIN: %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -2) to ptr addrspace(2)
	; PLAIN: ret ptr addrspace(2) %t
	; PLAIN: }
	; PLAIN: define ptr addrspace(1) @hoo8() #0 {
	; PLAIN: %t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) null, i32 -1) to ptr addrspace(1)
	; PLAIN: ret ptr addrspace(1) %t
	; PLAIN: }
	; PLAIN: define ptr addrspace(2) @hoo1() #0 {
	; PLAIN: %t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 -1) to ptr addrspace(2)
	; PLAIN: ret ptr addrspace(2) %t
	; PLAIN: }
	define ptr addrspace(1) @goo8() #0 {
	%t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
	ret ptr addrspace(1) %t
	}
	define ptr addrspace(2) @goo1() #0 {
	%t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
	ret ptr addrspace(2) %t
	}
	define ptr addrspace(1) @foo8() #0 {
	%t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 1 to ptr addrspace(1)), i32 -2) to ptr addrspace(1)
	ret ptr addrspace(1) %t
	}
	define ptr addrspace(2) @foo1() #0 {
	%t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 1 to ptr addrspace(2)), i32 -2) to ptr addrspace(2)
	ret ptr addrspace(2) %t
	}
	define ptr addrspace(1) @hoo8() #0 {
	%t = bitcast ptr addrspace(1) getelementptr (i8, ptr addrspace(1) inttoptr (i32 0 to ptr addrspace(1)), i32 -1) to ptr addrspace(1)
	ret ptr addrspace(1) %t
	}
	define ptr addrspace(2) @hoo1() #0 {
	%t = bitcast ptr addrspace(2) getelementptr (i1, ptr addrspace(2) inttoptr (i32 0 to ptr addrspace(2)), i32 -1) to ptr addrspace(2)
	ret ptr addrspace(2) %t
	}

	; PLAIN-X: define i64 @fa() #0 {
	; PLAIN-X: %t = bitcast i64 mul (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2310) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fb() #0 {
	; PLAIN-X: %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fc() #0 {
	; PLAIN-X: %t = bitcast i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 2) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fd() #0 {
	; PLAIN-X: %t = bitcast i64 mul nuw (i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64), i64 11) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fe() #0 {
	; PLAIN-X: %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ double, float, double, double }, ptr null, i64 0, i32 2) to i64) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @ff() #0 {
	; PLAIN-X: %t = bitcast i64 1 to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fg() #0 {
	; PLAIN-X: %t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({ i1, double }, ptr null, i64 0, i32 1) to i64) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fh() #0 {
	; PLAIN-X: %t = bitcast i64 ptrtoint (ptr addrspace(2) getelementptr (i1, ptr addrspace(2) null, i32 1) to i64) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	; PLAIN-X: define i64 @fi() #0 {
	; PLAIN-X: %t = bitcast i64 ptrtoint (ptr addrspace(2) getelementptr ({ i1, ptr addrspace(2) }, ptr null, i64 0, i32 1) to i64) to i64
	; PLAIN-X: ret i64 %t
	; PLAIN-X: }
	define i64 @fa() #0 {
	%t = bitcast i64 mul (i64 3, i64 mul (i64 ptrtoint (ptr getelementptr ({[7 x double], [7 x double]}, ptr null, i64 11) to i64), i64 5)) to i64
	ret i64 %t
	}
	define i64 @fb() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, [13 x double]}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
	ret i64 %t
	}
	define i64 @fc() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({double, double, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64) to i64
	ret i64 %t
	}
	define i64 @fd() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ([13 x double], ptr addrspace(4) null, i64 0, i32 11) to i64) to i64
	ret i64 %t
	}
	define i64 @fe() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({double, float, double, double}, ptr addrspace(4) null, i64 0, i32 2) to i64) to i64
	ret i64 %t
	}
	define i64 @ff() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, <{ i16, i128 }>}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
	ret i64 %t
	}
	define i64 @fg() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, {double, double}}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
	ret i64 %t
	}
	define i64 @fh() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr (double, ptr addrspace(4) null, i32 1) to i64) to i64
	ret i64 %t
	}
	define i64 @fi() #0 {
	%t = bitcast i64 ptrtoint (ptr addrspace(4) getelementptr ({i1, double}, ptr addrspace(4) null, i64 0, i32 1) to i64) to i64
	ret i64 %t
	}

	; PLAIN: define ptr @fM() #0 {
	; PLAIN: %t = bitcast ptr getelementptr (i64, ptr null, i32 1) to ptr
	; PLAIN: ret ptr %t
	; PLAIN: }
	; PLAIN: define ptr @fN() #0 {
	; PLAIN: %t = bitcast ptr getelementptr ({ i64, i64 }, ptr null, i32 0, i32 1) to ptr
	; PLAIN: ret ptr %t
	; PLAIN: }
	; PLAIN: define ptr @fO() #0 {
	; PLAIN: %t = bitcast ptr getelementptr ([2 x i64], ptr null, i32 0, i32 1) to ptr
	; PLAIN: ret ptr %t
	; PLAIN: }

	define ptr @fM() #0 {
	%t = bitcast ptr getelementptr (i64, ptr null, i32 1) to ptr
	ret ptr %t
	}
	define ptr @fN() #0 {
	%t = bitcast ptr getelementptr ({ i64, i64 }, ptr null, i32 0, i32 1) to ptr
	ret ptr %t
	}
	define ptr @fO() #0 {
	%t = bitcast ptr getelementptr ([2 x i64], ptr null, i32 0, i32 1) to ptr
	ret ptr %t
	}

	; PLAIN: define ptr addrspace(1) @fZ() #0 {
	; PLAIN: %t = bitcast ptr addrspace(1) getelementptr inbounds (i32, ptr addrspace(1) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(1) @ext2, i64 0, i64 1, i32 0), i64 1) to ptr addrspace(1)
	; PLAIN: ret ptr addrspace(1) %t
	; PLAIN: }
	@ext2 = external addrspace(1) global [3 x { i32, i32 }]
	define ptr addrspace(1) @fZ() #0 {
	%t = bitcast ptr addrspace(1) getelementptr inbounds (i32, ptr addrspace(1) getelementptr inbounds ([3 x { i32, i32 }], ptr addrspace(1) @ext2, i64 0, i64 1, i32 0), i64 1) to ptr addrspace(1)
	ret ptr addrspace(1) %t
	}

	attributes #0 = { nounwind }