markus added a comment.
With
$ ./bin/clang -cc1 -emit-llvm BBI-68673.c
the IR contains the following
@a2_ldm_i64 = global [4 x [18 x { i64, i64 }]] zeroinitializer, align 16
%arrayidx = getelementptr inbounds [4 x [18 x { i64, i64 }]], ptr
@a2_ldm_i64, i64 0, i64 %idxprom
%.real = load volatile i64, ptr getelementptr inbounds ([18 x { i64, i64 }],
ptr @a2_ldm_i64, i64 0, i64 1), align 16
but I would expect both GEPs to have the same first argument type (as the
global symbol)
If I on the other hand compile with
$ ./bin/clang -cc1 -emit-llvm -no-opaque-pointers BBI-68673.c
I instead get
@a2_ldm_i64 = global [4 x [18 x { i64, i64 }]] zeroinitializer, align 16
%arrayidx = getelementptr inbounds [4 x [18 x { i64, i64 }]], [4 x [18 x {
i64, i64 }]]* @a2_ldm_i64, i64 0, i64 %idxprom
%.real = load volatile i64, i64* getelementptr inbounds ([4 x [18 x { i64,
i64 }]], [4 x [18 x { i64, i64 }]]* @a2_ldm_i64, i64 0, i64 0, i64 1, i32 0),
align 16
which looks more consistent.
Any idea what is going on here?
F22817439: BBI-68673.c <https://reviews.llvm.org/F22817439>
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D123300/new/
https://reviews.llvm.org/D123300
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