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Deduplicate and canonicalize all constants. (#3611)

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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.
This commit is contained in:
Richard Smith
2024-01-18 21:42:19 +00:00
committed by GitHub
parent 62db3e9ad0
commit 29c294880d
142 changed files with 1603 additions and 1185 deletions
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toolchain/check/testdata/pointer/basic.carbon
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@@ -15,6 +15,7 @@ fn F() -> i32 {
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %.1: i32 = int_literal 0 [template]
// CHECK:STDOUT: %.2: type = ptr_type i32 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
@@ -28,7 +29,7 @@ fn F() -> i32 {
// CHECK:STDOUT: %n: ref i32 = bind_name n, %n.var
// CHECK:STDOUT: %.loc8: i32 = int_literal 0 [template = constants.%.1]
// CHECK:STDOUT: assign %n.var, %.loc8
// CHECK:STDOUT: %.loc9_13: type = ptr_type i32 [template]
// CHECK:STDOUT: %.loc9_13: type = ptr_type i32 [template = constants.%.2]
// CHECK:STDOUT: %p.var: ref i32* = var p
// CHECK:STDOUT: %p: ref i32* = bind_name p, %p.var
// CHECK:STDOUT: %n.ref: ref i32 = name_ref n, %n