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0a1c997c27
when we have a global variable base an an index. Instead, just give up on folding the global variable. Before we'd geenrate: _test: ## @test ## BB#0: movq _rtx_length@GOTPCREL(%rip), %rax leaq (%rax), %rax addq %rdi, %rax movzbl (%rax), %eax ret now we generate: _test: ## @test ## BB#0: movq _rtx_length@GOTPCREL(%rip), %rax movzbl (%rax,%rdi), %eax ret The difference is even more significant when there is a scale involved. This fixes rdar://9289558 - total fail with addr mode formation at -O0/x86-64 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129664 91177308-0d34-0410-b5e6-96231b3b80d8 |
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