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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2014-06-03 02:41:57 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2014-06-03 02:41:57 +0000 |
| commit | 64c1e1803311610e359e26a5f0ece867f0dabd3e (patch) | |
| tree | 22620fa3ecae9704f9f85544565445b5c52c7e24 /llvm/test/Bitcode | |
| parent | 2dfdfdf45c4c26a628527a542d9c4deaaf300ea1 (diff) | |
| download | bcm5719-llvm-64c1e1803311610e359e26a5f0ece867f0dabd3e.tar.gz bcm5719-llvm-64c1e1803311610e359e26a5f0ece867f0dabd3e.zip | |
Allow alias to point to an arbitrary ConstantExpr.
This patch changes GlobalAlias to point to an arbitrary ConstantExpr and it is
up to MC (or the system assembler) to decide if that expression is valid or not.
This reduces our ability to diagnose invalid uses and how early we can spot
them, but it also lets us do things like
@test5 = alias inttoptr(i32 sub (i32 ptrtoint (i32* @test2 to i32),
i32 ptrtoint (i32* @bar to i32)) to i32*)
An important implication of this patch is that the notion of aliased global
doesn't exist any more. The alias has to encode the information needed to
access it in its metadata (linkage, visibility, type, etc).
Another consequence to notice is that getSection has to return a "const char *".
It could return a NullTerminatedStringRef if there was such a thing, but when
that was proposed the decision was to just uses "const char*" for that.
llvm-svn: 210062
Diffstat (limited to 'llvm/test/Bitcode')
| -rw-r--r-- | llvm/test/Bitcode/old-aliases.ll | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/llvm/test/Bitcode/old-aliases.ll b/llvm/test/Bitcode/old-aliases.ll index 4ef47c03dd7..7a0eea2f3f2 100644 --- a/llvm/test/Bitcode/old-aliases.ll +++ b/llvm/test/Bitcode/old-aliases.ll @@ -10,13 +10,13 @@ ; CHECK: @v2 = global [1 x i32] zeroinitializer @v3 = alias bitcast (i32* @v1 to i16*) -; CHECK: @v3 = alias i16, i32* @v1 +; CHECK: @v3 = alias bitcast (i32* @v1 to i16*) @v4 = alias getelementptr ([1 x i32]* @v2, i32 0, i32 0) -; CHECK: @v4 = alias i32, [1 x i32]* @v2 +; CHECK: @v4 = alias getelementptr inbounds ([1 x i32]* @v2, i32 0, i32 0) @v5 = alias i32 addrspace(2)* addrspacecast (i32 addrspace(0)* @v1 to i32 addrspace(2)*) -; CHECK: @v5 = alias addrspace(2) i32, i32* @v1 +; CHECK: @v5 = alias addrspacecast (i32* @v1 to i32 addrspace(2)*) @v6 = alias i16* @v3 -; CHECK: @v6 = alias i16, i32* @v1 +; CHECK: @v6 = alias i16* @v3 |
