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Refactor function return type representation (#6463)

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This separates the return type from the return pattern, and replaces the
return pattern with a block of return patterns. This is a step toward
support for `ref` returns (where there's no corresponding return
pattern) and compund-form returns (where there may be multiple return
patterns).
This commit is contained in:
Geoff Romer
2025-12-10 18:34:23 +00:00
committed by GitHub
parent 77918d023b
commit bf45b1cbf5
57 changed files with 1668 additions and 1532 deletions
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toolchain/check/testdata/function/generic/deduce.carbon
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+6 -6
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@@ -602,7 +602,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc6_43: type = pattern_type %ptr.loc6_47.1 [symbolic = %pattern_type.loc6_43 (constants.%pattern_type.4f4)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc6_43: <witness> = require_complete_type %ptr.loc6_47.1 [symbolic = %require_complete.loc6_43 (constants.%require_complete.ef1)]
// CHECK:STDOUT: %require_complete.loc6_47: <witness> = require_complete_type %ptr.loc6_47.1 [symbolic = %require_complete.loc6_47 (constants.%require_complete.ef1)]
// CHECK:STDOUT: %require_complete.loc6_38: <witness> = require_complete_type %T.loc6_27.1 [symbolic = %require_complete.loc6_38 (constants.%require_complete.944)]
// CHECK:STDOUT: %ExplicitAndAlsoDeduced.specific_fn.loc7_10.2: <specific function> = specific_function constants.%ExplicitAndAlsoDeduced, @ExplicitAndAlsoDeduced(%T.loc6_27.1) [symbolic = %ExplicitAndAlsoDeduced.specific_fn.loc7_10.2 (constants.%ExplicitAndAlsoDeduced.specific_fn.4c1)]
// CHECK:STDOUT:
@@ -643,7 +643,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc6_43 => constants.%pattern_type.4f4
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc6_43 => constants.%require_complete.ef1
// CHECK:STDOUT: %require_complete.loc6_47 => constants.%require_complete.ef1
// CHECK:STDOUT: %require_complete.loc6_38 => constants.%require_complete.944
// CHECK:STDOUT: %ExplicitAndAlsoDeduced.specific_fn.loc7_10.2 => constants.%ExplicitAndAlsoDeduced.specific_fn.4c1
// CHECK:STDOUT: }
@@ -655,7 +655,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc6_43 => constants.%pattern_type.5f8
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc6_43 => constants.%complete_type.7ea
// CHECK:STDOUT: %require_complete.loc6_47 => constants.%complete_type.7ea
// CHECK:STDOUT: %require_complete.loc6_38 => constants.%complete_type.357
// CHECK:STDOUT: %ExplicitAndAlsoDeduced.specific_fn.loc7_10.2 => constants.%ExplicitAndAlsoDeduced.specific_fn.720
// CHECK:STDOUT: }
@@ -750,7 +750,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc4_41: type = pattern_type %ptr.loc4_45.1 [symbolic = %pattern_type.loc4_41 (constants.%pattern_type.4f4)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc4_41: <witness> = require_complete_type %ptr.loc4_45.1 [symbolic = %require_complete.loc4_41 (constants.%require_complete.ef1)]
// CHECK:STDOUT: %require_complete.loc4_45: <witness> = require_complete_type %ptr.loc4_45.1 [symbolic = %require_complete.loc4_45 (constants.%require_complete.ef1)]
// CHECK:STDOUT: %require_complete.loc4_36: <witness> = require_complete_type %T.loc4_25.1 [symbolic = %require_complete.loc4_36 (constants.%require_complete.944)]
// CHECK:STDOUT: %ImplicitGenericParam.specific_fn.loc4_56.2: <specific function> = specific_function constants.%ImplicitGenericParam, @ImplicitGenericParam(%T.loc4_25.1) [symbolic = %ImplicitGenericParam.specific_fn.loc4_56.2 (constants.%ImplicitGenericParam.specific_fn.47c)]
// CHECK:STDOUT:
@@ -780,7 +780,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc4_41 => constants.%pattern_type.4f4
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc4_41 => constants.%require_complete.ef1
// CHECK:STDOUT: %require_complete.loc4_45 => constants.%require_complete.ef1
// CHECK:STDOUT: %require_complete.loc4_36 => constants.%require_complete.944
// CHECK:STDOUT: %ImplicitGenericParam.specific_fn.loc4_56.2 => constants.%ImplicitGenericParam.specific_fn.47c
// CHECK:STDOUT: }
@@ -792,7 +792,7 @@ fn F() {
// CHECK:STDOUT: %pattern_type.loc4_41 => constants.%pattern_type.fe8
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %require_complete.loc4_41 => constants.%complete_type.3d0
// CHECK:STDOUT: %require_complete.loc4_45 => constants.%complete_type.3d0
// CHECK:STDOUT: %require_complete.loc4_36 => constants.%complete_type.f8a
// CHECK:STDOUT: %ImplicitGenericParam.specific_fn.loc4_56.2 => constants.%ImplicitGenericParam.specific_fn.752
// CHECK:STDOUT: }