forked from OSchip/llvm-project
parent
fdc732ab9a
commit
3d17e4c427
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@ -1553,30 +1553,6 @@ abs:
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//===---------------------------------------------------------------------===//
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Consider:
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#include <inttypes.h>
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uint64_t a;
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uint16_t b;
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uint64_t mul(void) {
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return a * b;
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}
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Currently, we generate the following:
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mul:
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movzwl b, %ecx
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movl %ecx, %eax
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mull a
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imull a+4, %ecx
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addl %edx, %ecx
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movl %ecx, %edx
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ret
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llvm should be able to commute the addl so that the movl isn't necessary.
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//===---------------------------------------------------------------------===//
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Consider:
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int test(unsigned long a, unsigned long b) { return -(a < b); }
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