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compiler: canonicalize generic instance identities

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x/tools SSA names and go/types strings can preserve the source spelling of
type arguments, so aliases can make distinct instances collide. Use the
canonical type encoding for function names, synthetic local type owners,
instantiated named types, and method sets.
This commit is contained in:
Jake Bailey
2026-07-12 14:12:54 -07:00
committed by Ron Evans
parent 73db9776b1
commit c7923d1c64
5 changed files with 51 additions and 46 deletions
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compiler/testdata/generics.ll
Vendored
+15 -9
View File
@@ -17,12 +17,12 @@ entry:
; Function Attrs: nounwind
define hidden i32 @main.aliasSize32(ptr %context) unnamed_addr #1 {
entry:
%0 = call i32 @"main.aliasSize[main.F]"(ptr undef)
%0 = call i32 @"main.aliasSize[basic:float32]"(ptr undef)
ret i32 %0
}
; Function Attrs: nounwind
define linkonce_odr hidden i32 @"main.aliasSize[main.F]"(ptr %context) unnamed_addr #1 {
define linkonce_odr hidden i32 @"main.aliasSize[basic:float32]"(ptr %context) unnamed_addr #1 {
entry:
ret i32 4
}
@@ -30,15 +30,21 @@ entry:
; Function Attrs: nounwind
define hidden i32 @main.aliasSize64(ptr %context) unnamed_addr #1 {
entry:
%0 = call i32 @"main.aliasSize[main.F]"(ptr undef)
%0 = call i32 @"main.aliasSize[basic:float64]"(ptr undef)
ret i32 %0
}
; Function Attrs: nounwind
define linkonce_odr hidden i32 @"main.aliasSize[basic:float64]"(ptr %context) unnamed_addr #1 {
entry:
ret i32 8
}
; Function Attrs: nounwind
define hidden void @main.main(ptr %context) unnamed_addr #1 {
entry:
%0 = call %"main.Point[float32]" @"main.Add[float32]"(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, ptr undef)
%1 = call %"main.Point[int]" @"main.Add[int]"(i32 0, i32 0, i32 0, i32 0, ptr undef)
%0 = call %"main.Point[float32]" @"main.Add[basic:float32]"(float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00, ptr undef)
%1 = call %"main.Point[int]" @"main.Add[basic:int]"(i32 0, i32 0, i32 0, i32 0, ptr undef)
%2 = call i32 @main.aliasSize32(ptr undef)
call void @main.checkSize(i32 %2, ptr undef) #4
%3 = call i32 @main.aliasSize64(ptr undef)
@@ -47,7 +53,7 @@ entry:
}
; Function Attrs: nounwind
define linkonce_odr hidden %"main.Point[float32]" @"main.Add[float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, ptr %context) unnamed_addr #1 {
define linkonce_odr hidden %"main.Point[float32]" @"main.Add[basic:float32]"(float %a.X, float %a.Y, float %b.X, float %b.Y, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
@@ -110,7 +116,7 @@ declare void @main.checkSize(i32, ptr) #0
declare void @runtime.nilPanic(ptr) #0
; Function Attrs: nounwind
define linkonce_odr hidden %"main.Point[int]" @"main.Add[int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, ptr %context) unnamed_addr #1 {
define linkonce_odr hidden %"main.Point[int]" @"main.Add[basic:int]"(i32 %a.X, i32 %a.Y, i32 %b.X, i32 %b.Y, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%a = call align 4 dereferenceable(8) ptr @runtime.alloc(i32 8, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #4
@@ -170,7 +176,7 @@ declare void @main.checkBool(i1, ptr) #0
; Function Attrs: nounwind
define hidden void @main.aliasMethod32(ptr %x.typecode, ptr %x.value, ptr %context) unnamed_addr #1 {
entry:
%0 = call i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[main.F]}}.$typeassert"(ptr %x.typecode) #4
%0 = call i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[basic:float32]}}.$typeassert"(ptr %x.typecode) #4
br i1 %0, label %typeassert.ok, label %typeassert.next
typeassert.next: ; preds = %typeassert.ok, %entry
@@ -181,7 +187,7 @@ typeassert.ok: ; preds = %entry
br label %typeassert.next
}
declare i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[main.F]}}.$typeassert"(ptr) #3
declare i1 @"interface:{Get:func:{}{named:main.aliasMethodResult[basic:float32]}}.$typeassert"(ptr) #3
attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
compiler/testdata/pragma.ll
Vendored
+2 -2
View File
@@ -50,12 +50,12 @@ entry:
; Function Attrs: nounwind
define hidden void @main.useGeneric(ptr %context) unnamed_addr #1 {
entry:
call void @"main.noinlineGenericFunc[int8]"(ptr undef)
call void @"main.noinlineGenericFunc[basic:int8]"(ptr undef)
ret void
}
; Function Attrs: noinline nounwind
define linkonce_odr hidden void @"main.noinlineGenericFunc[int8]"(ptr %context) unnamed_addr #4 {
define linkonce_odr hidden void @"main.noinlineGenericFunc[basic:int8]"(ptr %context) unnamed_addr #4 {
entry:
ret void
}