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3502062991
Generalize the existing optimization of "TSTNE x,sign" and "TSTNE x,-1". This can be useful for example in the i386 frontend, which will generate tests of zero-extended registers against 0xffffffff. Ironically, on x86 hosts this is a very slight pessimization in the very case it's meant to optimize because brcond_i64 cc_dst,$0xffffffff,tsteq,$L1 (test %ebx, %ebx) is 1 byte smaller than brcond_i64 cc_dst,$0x0,eq,$L1 (test %rbx, %rbx). However, in general it is an improvement, especially if it avoids placing a large immediate in the constant pool. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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| .. | ||
| aarch64 | ||
| arm | ||
| i386 | ||
| loongarch64 | ||
| mips | ||
| ppc | ||
| riscv | ||
| s390x | ||
| sparc64 | ||
| tci | ||
| debuginfo.c | ||
| meson.build | ||
| optimize.c | ||
| perf.c | ||
| region.c | ||
| tcg-common.c | ||
| tcg-has.h | ||
| tcg-internal.h | ||
| tcg-op-gvec.c | ||
| tcg-op-ldst.c | ||
| tcg-op-vec.c | ||
| tcg-op.c | ||
| tcg.c | ||
| tci.c | ||