| Commit message (Collapse) | Author | Age | Files | Lines | |
|---|---|---|---|---|---|
| * | implement rdar://6653118 - fastisel should fold loads where possible. | Chris Lattner | 2010-09-05 | 1 | -4/+14 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since mem2reg isn't run at -O0, we get a ton of reloads from the stack, for example, before, this code: int foo(int x, int y, int z) { return x+y+z; } used to compile into: _foo: ## @foo subq $12, %rsp movl %edi, 8(%rsp) movl %esi, 4(%rsp) movl %edx, (%rsp) movl 8(%rsp), %edx movl 4(%rsp), %esi addl %edx, %esi movl (%rsp), %edx addl %esi, %edx movl %edx, %eax addq $12, %rsp ret Now we produce: _foo: ## @foo subq $12, %rsp movl %edi, 8(%rsp) movl %esi, 4(%rsp) movl %edx, (%rsp) movl 8(%rsp), %edx addl 4(%rsp), %edx ## Folded load addl (%rsp), %edx ## Folded load movl %edx, %eax addq $12, %rsp ret Fewer instructions and less register use = faster compiles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113102 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Eliminate more uses of llvm-as and llvm-dis. | Dan Gohman | 2009-09-08 | 1 | -2/+2 |
| | | | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Refactor X86SelectConstAddr, folding it into X86SelectAddress. This | Dan Gohman | 2008-09-19 | 1 | -1/+1 |
| | | | | | | | | | results in better code for globals. Also, unbreak the local CSE for GlobalValue stub loads. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56371 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Fix a constant lowering bug. Now we can do load and store instructions with ↵ | Evan Cheng | 2008-09-09 | 1 | -3/+14 |
| | | | | | | | funky getelementptr embedded in the address operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55975 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Fix the ordering of operands to the store (inverted relative to LLVM IR), ↵ | Owen Anderson | 2008-09-04 | 1 | -1/+1 |
| | | | | | | | and fix the testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55777 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Add a first attempt at implementing stores for X86 fast isel using target hooks. | Owen Anderson | 2008-09-04 | 1 | -1/+2 |
| | | | | | | | | Dan or Evan, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55764 91177308-0d34-0410-b5e6-96231b3b80d8 | ||||
| * | Load from GV stub should be locally CSE'd. | Evan Cheng | 2008-09-04 | 1 | -0/+12 |
| git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55763 91177308-0d34-0410-b5e6-96231b3b80d8 | |||||
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