carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-10-05 22:02:55 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Add support for converting between integer types (#4753)

Browse Source 
Add a builtin `"int.convert"` supporting unchecked conversions between
different integer types. This performs a truncation, zero-extension, or
sign-extension, depending on the widths of the operands and the
signedness of the source type. Add explicit `As` support to the prelude.
No implicit conversions are supported yet as we don't have a way to
express the constraint that we can only implicitly convert to wider
types.
This commit is contained in:
Richard Smith
2025-01-08 08:25:20 +00:00
committed by GitHub
parent 96d836f965
commit 246ec785df
14 changed files with 545 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/lower/testdata/function/generic/call.carbon
Vendored
+8 -8
View File
@@ -44,11 +44,11 @@ fn G() {
// CHECK:STDOUT: call void @llvm.memcpy.p0.p0.i64(ptr align 1 %d.var, ptr align 1 @D.val.loc19_16, i64 0, i1 false), !dbg !9
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 4, ptr %n.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !10
// CHECK:STDOUT: call void @_CF.Main.118(ptr %c.var), !dbg !11
// CHECK:STDOUT: call void @_CF.Main.119(ptr %d.var), !dbg !12
// CHECK:STDOUT: call void @_CF.Main.129(ptr %c.var), !dbg !11
// CHECK:STDOUT: call void @_CF.Main.130(ptr %d.var), !dbg !12
// CHECK:STDOUT: %.loc24 = load i32, ptr %n.var, align 4, !dbg !13
// CHECK:STDOUT: call void @_CF.Main.120(i32 %.loc24), !dbg !14
// CHECK:STDOUT: call void @_CF.Main.121(%type zeroinitializer), !dbg !15
// CHECK:STDOUT: call void @_CF.Main.131(i32 %.loc24), !dbg !14
// CHECK:STDOUT: call void @_CF.Main.132(%type zeroinitializer), !dbg !15
// CHECK:STDOUT: ret void, !dbg !16
// CHECK:STDOUT: }
// CHECK:STDOUT:
@@ -58,13 +58,13 @@ fn G() {
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.118(ptr)
// CHECK:STDOUT: declare void @_CF.Main.129(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.119(ptr)
// CHECK:STDOUT: declare void @_CF.Main.130(ptr)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.120(i32)
// CHECK:STDOUT: declare void @_CF.Main.131(i32)
// CHECK:STDOUT:
// CHECK:STDOUT: declare void @_CF.Main.121(%type)
// CHECK:STDOUT: declare void @_CF.Main.132(%type)
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 2, 1, 0 }
toolchain/lower/testdata/function/generic/call_method.carbon
Vendored
+2 -2
View File
@@ -34,7 +34,7 @@ fn CallF() -> i32 {
// CHECK:STDOUT: call void @llvm.lifetime.start.p0(i64 4, ptr %n.var), !dbg !7
// CHECK:STDOUT: store i32 0, ptr %n.var, align 4, !dbg !9
// CHECK:STDOUT: %.loc20_14 = load i32, ptr %n.var, align 4, !dbg !10
// CHECK:STDOUT: %F.call = call i32 @_CF.C.Main.118(ptr %c.var, i32 %.loc20_14), !dbg !11
// CHECK:STDOUT: %F.call = call i32 @_CF.C.Main.129(ptr %c.var, i32 %.loc20_14), !dbg !11
// CHECK:STDOUT: ret i32 %F.call, !dbg !12
// CHECK:STDOUT: }
// CHECK:STDOUT:
@@ -44,7 +44,7 @@ fn CallF() -> i32 {
// CHECK:STDOUT: ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
// CHECK:STDOUT: declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1
// CHECK:STDOUT:
// CHECK:STDOUT: declare i32 @_CF.C.Main.118(ptr, i32)
// CHECK:STDOUT: declare i32 @_CF.C.Main.129(ptr, i32)
// CHECK:STDOUT:
// CHECK:STDOUT: ; uselistorder directives
// CHECK:STDOUT: uselistorder ptr @llvm.lifetime.start.p0, { 1, 0 }