mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 22:02:45 +01:00
Richard Smith
29c294880d
Rather than producing multiple constants with the same value, fold all instances of a given constant to the same constant instruction. A future PR will use this to replace the current type canonicalization system.
131 lines
7.0 KiB
Plaintext
131 lines
7.0 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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fn F() -> [i32; 3];
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fn G(b: [i32; 3]) {
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var a: [i32; 3] = (1, 2, 3);
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// Indexing a durable array reference gives a durable reference.
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var pa: i32* = &a[0];
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a[0] = 4;
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}
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fn ValueBinding(b: [i32; 3]) {
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var a: [i32; 3] = (1, 2, 3);
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// Index but don't do anything else so we can check that a value binding is
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// produced when appropriate.
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a[0];
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b[0];
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F()[0];
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}
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// CHECK:STDOUT: --- expr_category.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: i32 = int_literal 3 [template]
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// CHECK:STDOUT: %.2: type = array_type %.1, i32 [template]
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// CHECK:STDOUT: %.3: type = ptr_type [i32; 3] [template]
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// CHECK:STDOUT: %.4: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.5: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.6: type = tuple_type (i32, i32, i32) [template]
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// CHECK:STDOUT: %.7: i32 = int_literal 0 [template]
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// CHECK:STDOUT: %.8: i32 = int_literal 1 [template]
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// CHECK:STDOUT: %.9: i32 = int_literal 2 [template]
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// CHECK:STDOUT: %.10: type = ptr_type i32 [template]
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// CHECK:STDOUT: %.11: i32 = int_literal 0 [template]
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// CHECK:STDOUT: %.12: i32 = int_literal 4 [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace package, {.F = %F, .G = %G, .ValueBinding = %ValueBinding} [template]
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
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// CHECK:STDOUT: %G: <function> = fn_decl @G [template]
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// CHECK:STDOUT: %ValueBinding: <function> = fn_decl @ValueBinding [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F() -> %return: [i32; 3];
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @G(%b: [i32; 3]) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %.loc10_16: i32 = int_literal 3 [template = constants.%.1]
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// CHECK:STDOUT: %.loc10_17: type = array_type %.loc10_16, i32 [template = constants.%.2]
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// CHECK:STDOUT: %a.var: ref [i32; 3] = var a
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// CHECK:STDOUT: %a: ref [i32; 3] = bind_name a, %a.var
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// CHECK:STDOUT: %.loc10_22: i32 = int_literal 1 [template = constants.%.4]
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// CHECK:STDOUT: %.loc10_25: i32 = int_literal 2 [template = constants.%.5]
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// CHECK:STDOUT: %.loc10_28: i32 = int_literal 3 [template = constants.%.1]
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// CHECK:STDOUT: %.loc10_29.1: (i32, i32, i32) = tuple_literal (%.loc10_22, %.loc10_25, %.loc10_28)
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// CHECK:STDOUT: %.loc10_29.2: i32 = int_literal 0 [template = constants.%.7]
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// CHECK:STDOUT: %.loc10_29.3: ref i32 = array_index %a.var, %.loc10_29.2
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// CHECK:STDOUT: %.loc10_29.4: init i32 = initialize_from %.loc10_22 to %.loc10_29.3
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// CHECK:STDOUT: %.loc10_29.5: i32 = int_literal 1 [template = constants.%.8]
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// CHECK:STDOUT: %.loc10_29.6: ref i32 = array_index %a.var, %.loc10_29.5
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// CHECK:STDOUT: %.loc10_29.7: init i32 = initialize_from %.loc10_25 to %.loc10_29.6
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// CHECK:STDOUT: %.loc10_29.8: i32 = int_literal 2 [template = constants.%.9]
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// CHECK:STDOUT: %.loc10_29.9: ref i32 = array_index %a.var, %.loc10_29.8
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// CHECK:STDOUT: %.loc10_29.10: init i32 = initialize_from %.loc10_28 to %.loc10_29.9
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// CHECK:STDOUT: %.loc10_29.11: init [i32; 3] = array_init (%.loc10_29.4, %.loc10_29.7, %.loc10_29.10) to %a.var
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// CHECK:STDOUT: %.loc10_29.12: init [i32; 3] = converted %.loc10_29.1, %.loc10_29.11
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// CHECK:STDOUT: assign %a.var, %.loc10_29.12
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// CHECK:STDOUT: %.loc13_14: type = ptr_type i32 [template = constants.%.10]
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// CHECK:STDOUT: %pa.var: ref i32* = var pa
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// CHECK:STDOUT: %pa: ref i32* = bind_name pa, %pa.var
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// CHECK:STDOUT: %a.ref.loc13: ref [i32; 3] = name_ref a, %a
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// CHECK:STDOUT: %.loc13_21: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc13_22: ref i32 = array_index %a.ref.loc13, %.loc13_21
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// CHECK:STDOUT: %.loc13_18: i32* = addr_of %.loc13_22
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// CHECK:STDOUT: assign %pa.var, %.loc13_18
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// CHECK:STDOUT: %a.ref.loc14: ref [i32; 3] = name_ref a, %a
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// CHECK:STDOUT: %.loc14_5: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc14_6: ref i32 = array_index %a.ref.loc14, %.loc14_5
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// CHECK:STDOUT: %.loc14_10: i32 = int_literal 4 [template = constants.%.12]
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// CHECK:STDOUT: assign %.loc14_6, %.loc14_10
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @ValueBinding(%b: [i32; 3]) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %.loc18_16: i32 = int_literal 3 [template = constants.%.1]
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// CHECK:STDOUT: %.loc18_17: type = array_type %.loc18_16, i32 [template = constants.%.2]
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// CHECK:STDOUT: %a.var: ref [i32; 3] = var a
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// CHECK:STDOUT: %a: ref [i32; 3] = bind_name a, %a.var
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// CHECK:STDOUT: %.loc18_22: i32 = int_literal 1 [template = constants.%.4]
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// CHECK:STDOUT: %.loc18_25: i32 = int_literal 2 [template = constants.%.5]
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// CHECK:STDOUT: %.loc18_28: i32 = int_literal 3 [template = constants.%.1]
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// CHECK:STDOUT: %.loc18_29.1: (i32, i32, i32) = tuple_literal (%.loc18_22, %.loc18_25, %.loc18_28)
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// CHECK:STDOUT: %.loc18_29.2: i32 = int_literal 0 [template = constants.%.7]
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// CHECK:STDOUT: %.loc18_29.3: ref i32 = array_index %a.var, %.loc18_29.2
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// CHECK:STDOUT: %.loc18_29.4: init i32 = initialize_from %.loc18_22 to %.loc18_29.3
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// CHECK:STDOUT: %.loc18_29.5: i32 = int_literal 1 [template = constants.%.8]
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// CHECK:STDOUT: %.loc18_29.6: ref i32 = array_index %a.var, %.loc18_29.5
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// CHECK:STDOUT: %.loc18_29.7: init i32 = initialize_from %.loc18_25 to %.loc18_29.6
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// CHECK:STDOUT: %.loc18_29.8: i32 = int_literal 2 [template = constants.%.9]
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// CHECK:STDOUT: %.loc18_29.9: ref i32 = array_index %a.var, %.loc18_29.8
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// CHECK:STDOUT: %.loc18_29.10: init i32 = initialize_from %.loc18_28 to %.loc18_29.9
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// CHECK:STDOUT: %.loc18_29.11: init [i32; 3] = array_init (%.loc18_29.4, %.loc18_29.7, %.loc18_29.10) to %a.var
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// CHECK:STDOUT: %.loc18_29.12: init [i32; 3] = converted %.loc18_29.1, %.loc18_29.11
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// CHECK:STDOUT: assign %a.var, %.loc18_29.12
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// CHECK:STDOUT: %a.ref: ref [i32; 3] = name_ref a, %a
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// CHECK:STDOUT: %.loc22_5: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc22_6: ref i32 = array_index %a.ref, %.loc22_5
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// CHECK:STDOUT: %b.ref: [i32; 3] = name_ref b, %b
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// CHECK:STDOUT: %.loc23_5: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc23_6.1: ref [i32; 3] = value_as_ref %b.ref
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// CHECK:STDOUT: %.loc23_6.2: ref i32 = array_index %.loc23_6.1, %.loc23_5
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// CHECK:STDOUT: %.loc23_6.3: i32 = bind_value %.loc23_6.2
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// CHECK:STDOUT: %F.ref: <function> = name_ref F, file.%F [template = file.%F]
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// CHECK:STDOUT: %.loc24_4.1: ref [i32; 3] = temporary_storage
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// CHECK:STDOUT: %.loc24_4.2: init [i32; 3] = call %F.ref() to %.loc24_4.1
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// CHECK:STDOUT: %.loc24_7: i32 = int_literal 0 [template = constants.%.11]
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// CHECK:STDOUT: %.loc24_4.3: ref [i32; 3] = temporary %.loc24_4.1, %.loc24_4.2
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// CHECK:STDOUT: %.loc24_8.1: ref i32 = array_index %.loc24_4.3, %.loc24_7
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// CHECK:STDOUT: %.loc24_8.2: i32 = bind_value %.loc24_8.1
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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