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| author | Erik Desjardins <erikdesjardins@users.noreply.github.com> | 2024-02-25 00:47:49 -0500 |
|---|---|---|
| committer | Erik Desjardins <erikdesjardins@users.noreply.github.com> | 2024-03-05 19:11:11 -0500 |
| commit | efe5a40f2b6b1f748a966a7e1da1903ed1b8cb58 (patch) | |
| tree | 08666703782fa5bf94e0922394d6d4a81efb257d | |
| parent | b6d2d841bcf4b77343b159f134c7d39c2dd4ceaa (diff) | |
| download | rust-efe5a40f2b6b1f748a966a7e1da1903ed1b8cb58.tar.gz rust-efe5a40f2b6b1f748a966a7e1da1903ed1b8cb58.zip | |
remove all-zero GEP
This always produces zero offset, regardless of what the struct layout is. Originally, this may have been necessary in order to change the pointer type, but with opaque pointers, it is no longer necessary.
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/mir/rvalue.rs | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs index f7ff36c0467..9ae82d4845e 100644 --- a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs +++ b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs @@ -94,8 +94,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { } if let OperandValue::Immediate(v) = cg_elem.val { - let zero = bx.const_usize(0); - let start = dest.project_index(bx, zero).llval; + let start = dest.llval; let size = bx.const_usize(dest.layout.size.bytes()); // Use llvm.memset.p0i8.* to initialize all zero arrays |