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IR: add optional type to 'byval' function parameters

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When we switch to opaque pointer types we will need some way to describe
how many bytes a 'byval' parameter should occupy on the stack. This adds
a (for now) optional extra type parameter.

If present, the type must match the pointee type of the argument.

Note to front-end maintainers: if this causes test failures, it's probably
because the "byval" attribute is printed after attributes without any parameter
after this change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362012 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tim Northover
2019-05-29 19:12:48 +00:00
parent 0c5b5c7d5f
commit aef2b1ac1a
40 changed files with 425 additions and 41 deletions
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test/Bitcode/highLevelStructure.3.2.ll
+2 -2
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@@ -41,7 +41,7 @@ declare void @ParamAttr3(i8* sret)
declare void @ParamAttr4(i8 signext)
; CHECK: declare void @ParamAttr5(i8* inreg)
declare void @ParamAttr5(i8* inreg)
; CHECK: declare void @ParamAttr6(i8* byval)
; CHECK: declare void @ParamAttr6(i8* byval(i8))
declare void @ParamAttr6(i8* byval)
; CHECK: declare void @ParamAttr7(i8* noalias)
declare void @ParamAttr7(i8* noalias)
@@ -51,7 +51,7 @@ declare void @ParamAttr8(i8* nocapture)
declare void @ParamAttr9(i8* nest noalias nocapture)
; CHECK: declare void @ParamAttr10{{[(i8* sret noalias nocapture) | (i8* noalias nocapture sret)]}}
declare void @ParamAttr10(i8* sret noalias nocapture)
;CHECK: declare void @ParamAttr11{{[(i8* byval noalias nocapture) | (i8* noalias nocapture byval)]}}
;CHECK: declare void @ParamAttr11{{[(i8* byval(i8) noalias nocapture) | (i8* noalias nocapture byval(i8))]}}
declare void @ParamAttr11(i8* byval noalias nocapture)
;CHECK: declare void @ParamAttr12{{[(i8* inreg noalias nocapture) | (i8* noalias nocapture inreg)]}}
declare void @ParamAttr12(i8* inreg noalias nocapture)