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Constant evaluation support for initializing expressions. (#3624)

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The constant value we associate with an initializing representation is
the object representation that the initializing expression will store to
its destination.

Also include the type in the profile of an instruction. This is now
necessary for array values, which are represented as tuple_value
instructions with array type, to avoid instructions with different types
being merged by constant canonicalization.
This commit is contained in:
Richard Smith
2024-01-19 23:28:53 +00:00
committed by GitHub
parent a1d03b1f56
commit 87ecb34f6b
54 changed files with 588 additions and 398 deletions
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toolchain/check/testdata/pointer/address_of_lvalue.carbon
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+21 -19
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@@ -23,11 +23,13 @@ fn F() {
// CHECK:STDOUT: %.2: type = ptr_type {.a: i32, .b: i32} [template]
// CHECK:STDOUT: %.3: i32 = int_literal 1 [template]
// CHECK:STDOUT: %.4: i32 = int_literal 2 [template]
// CHECK:STDOUT: %.5: type = ptr_type i32 [template]
// CHECK:STDOUT: %.6: type = tuple_type (type, type) [template]
// CHECK:STDOUT: %.7: type = tuple_type (i32, i32) [template]
// CHECK:STDOUT: %.8: type = ptr_type (i32, i32) [template]
// CHECK:STDOUT: %.9: i32 = int_literal 0 [template]
// CHECK:STDOUT: %.5: {.a: i32, .b: i32} = struct_value (%.3, %.4) [template]
// CHECK:STDOUT: %.6: type = ptr_type i32 [template]
// CHECK:STDOUT: %.7: type = tuple_type (type, type) [template]
// CHECK:STDOUT: %.8: type = tuple_type (i32, i32) [template]
// CHECK:STDOUT: %.9: type = ptr_type (i32, i32) [template]
// CHECK:STDOUT: %.10: (i32, i32) = tuple_value (%.3, %.4) [template]
// CHECK:STDOUT: %.11: i32 = int_literal 0 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
@@ -44,11 +46,11 @@ fn F() {
// CHECK:STDOUT: %.loc8_45: i32 = int_literal 2 [template = constants.%.4]
// CHECK:STDOUT: %.loc8_46.1: {.a: i32, .b: i32} = struct_literal (%.loc8_37, %.loc8_45)
// CHECK:STDOUT: %.loc8_46.2: ref i32 = struct_access %s.var, element0
// CHECK:STDOUT: %.loc8_46.3: init i32 = initialize_from %.loc8_37 to %.loc8_46.2
// CHECK:STDOUT: %.loc8_46.3: init i32 = initialize_from %.loc8_37 to %.loc8_46.2 [template = constants.%.3]
// CHECK:STDOUT: %.loc8_46.4: ref i32 = struct_access %s.var, element1
// CHECK:STDOUT: %.loc8_46.5: init i32 = initialize_from %.loc8_45 to %.loc8_46.4
// CHECK:STDOUT: %.loc8_46.6: init {.a: i32, .b: i32} = struct_init (%.loc8_46.3, %.loc8_46.5) to %s.var
// CHECK:STDOUT: %.loc8_46.7: init {.a: i32, .b: i32} = converted %.loc8_46.1, %.loc8_46.6
// CHECK:STDOUT: %.loc8_46.5: init i32 = initialize_from %.loc8_45 to %.loc8_46.4 [template = constants.%.4]
// CHECK:STDOUT: %.loc8_46.6: init {.a: i32, .b: i32} = struct_init (%.loc8_46.3, %.loc8_46.5) to %s.var [template = constants.%.5]
// CHECK:STDOUT: %.loc8_46.7: init {.a: i32, .b: i32} = converted %.loc8_46.1, %.loc8_46.6 [template = constants.%.5]
// CHECK:STDOUT: assign %s.var, %.loc8_46.7
// CHECK:STDOUT: %.loc10_27: type = struct_type {.a: i32, .b: i32} [template = constants.%.1]
// CHECK:STDOUT: %.loc10_28: type = ptr_type {.a: i32, .b: i32} [template = constants.%.2]
@@ -57,14 +59,14 @@ fn F() {
// CHECK:STDOUT: %s.ref.loc10: ref {.a: i32, .b: i32} = name_ref s, %s
// CHECK:STDOUT: %.loc10_32: {.a: i32, .b: i32}* = addr_of %s.ref.loc10
// CHECK:STDOUT: assign %p.var, %.loc10_32
// CHECK:STDOUT: %.loc11_13: type = ptr_type i32 [template = constants.%.5]
// CHECK:STDOUT: %.loc11_13: type = ptr_type i32 [template = constants.%.6]
// CHECK:STDOUT: %q.var: ref i32* = var q
// CHECK:STDOUT: %q: ref i32* = bind_name q, %q.var
// CHECK:STDOUT: %s.ref.loc11: ref {.a: i32, .b: i32} = name_ref s, %s
// CHECK:STDOUT: %.loc11_19: ref i32 = struct_access %s.ref.loc11, element0
// CHECK:STDOUT: %.loc11_17: i32* = addr_of %.loc11_19
// CHECK:STDOUT: assign %q.var, %.loc11_17
// CHECK:STDOUT: %.loc12_13: type = ptr_type i32 [template = constants.%.5]
// CHECK:STDOUT: %.loc12_13: type = ptr_type i32 [template = constants.%.6]
// CHECK:STDOUT: %r.var: ref i32* = var r
// CHECK:STDOUT: %r: ref i32* = bind_name r, %r.var
// CHECK:STDOUT: %s.ref.loc12: ref {.a: i32, .b: i32} = name_ref s, %s
@@ -72,28 +74,28 @@ fn F() {
// CHECK:STDOUT: %.loc12_17: i32* = addr_of %.loc12_19
// CHECK:STDOUT: assign %r.var, %.loc12_17
// CHECK:STDOUT: %.loc14_19.1: (type, type) = tuple_literal (i32, i32)
// CHECK:STDOUT: %.loc14_19.2: type = converted %.loc14_19.1, constants.%.7 [template = constants.%.7]
// CHECK:STDOUT: %.loc14_19.2: type = converted %.loc14_19.1, constants.%.8 [template = constants.%.8]
// CHECK:STDOUT: %t.var: ref (i32, i32) = var t
// CHECK:STDOUT: %t: ref (i32, i32) = bind_name t, %t.var
// CHECK:STDOUT: %.loc14_24: i32 = int_literal 1 [template = constants.%.3]
// CHECK:STDOUT: %.loc14_27: i32 = int_literal 2 [template = constants.%.4]
// CHECK:STDOUT: %.loc14_28.1: (i32, i32) = tuple_literal (%.loc14_24, %.loc14_27)
// CHECK:STDOUT: %.loc14_28.2: ref i32 = tuple_access %t.var, element0
// CHECK:STDOUT: %.loc14_28.3: init i32 = initialize_from %.loc14_24 to %.loc14_28.2
// CHECK:STDOUT: %.loc14_28.3: init i32 = initialize_from %.loc14_24 to %.loc14_28.2 [template = constants.%.3]
// CHECK:STDOUT: %.loc14_28.4: ref i32 = tuple_access %t.var, element1
// CHECK:STDOUT: %.loc14_28.5: init i32 = initialize_from %.loc14_27 to %.loc14_28.4
// CHECK:STDOUT: %.loc14_28.6: init (i32, i32) = tuple_init (%.loc14_28.3, %.loc14_28.5) to %t.var
// CHECK:STDOUT: %.loc14_28.7: init (i32, i32) = converted %.loc14_28.1, %.loc14_28.6
// CHECK:STDOUT: %.loc14_28.5: init i32 = initialize_from %.loc14_27 to %.loc14_28.4 [template = constants.%.4]
// CHECK:STDOUT: %.loc14_28.6: init (i32, i32) = tuple_init (%.loc14_28.3, %.loc14_28.5) to %t.var [template = constants.%.10]
// CHECK:STDOUT: %.loc14_28.7: init (i32, i32) = converted %.loc14_28.1, %.loc14_28.6 [template = constants.%.10]
// CHECK:STDOUT: assign %t.var, %.loc14_28.7
// CHECK:STDOUT: %.loc15_14: type = ptr_type i32 [template = constants.%.5]
// CHECK:STDOUT: %.loc15_14: type = ptr_type i32 [template = constants.%.6]
// CHECK:STDOUT: %t0.var: ref i32* = var t0
// CHECK:STDOUT: %t0: ref i32* = bind_name t0, %t0.var
// CHECK:STDOUT: %t.ref.loc15: ref (i32, i32) = name_ref t, %t
// CHECK:STDOUT: %.loc15_21: i32 = int_literal 0 [template = constants.%.9]
// CHECK:STDOUT: %.loc15_21: i32 = int_literal 0 [template = constants.%.11]
// CHECK:STDOUT: %.loc15_22: ref i32 = tuple_index %t.ref.loc15, %.loc15_21
// CHECK:STDOUT: %.loc15_18: i32* = addr_of %.loc15_22
// CHECK:STDOUT: assign %t0.var, %.loc15_18
// CHECK:STDOUT: %.loc16_14: type = ptr_type i32 [template = constants.%.5]
// CHECK:STDOUT: %.loc16_14: type = ptr_type i32 [template = constants.%.6]
// CHECK:STDOUT: %t1.var: ref i32* = var t1
// CHECK:STDOUT: %t1: ref i32* = bind_name t1, %t1.var
// CHECK:STDOUT: %t.ref.loc16: ref (i32, i32) = name_ref t, %t