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authorChris Lattner <sabre@nondot.org>2005-04-12 02:19:10 +0000
committerChris Lattner <sabre@nondot.org>2005-04-12 02:19:10 +0000
commit5b95ed652fcfe578aa8af4e21318fca989164e21 (patch)
treeb1791d6b9cf62d61986587863e5b69e1b482b49c /lib/Analysis
parent08b698e38db5ab5db44c0472e2a7f4f780887629 (diff)
Emit comparisons against the sign bit better. Codegen this:
bool %test1(long %X) { %A = setlt long %X, 0 ret bool %A } like this: test1: cmpl $0, 8(%esp) setl %al movzbl %al, %eax ret instead of: test1: movl 8(%esp), %ecx cmpl $0, %ecx setl %al movzbw %al, %ax cmpl $0, 4(%esp) setb %dl movzbw %dl, %dx cmpl $0, %ecx cmove %dx, %ax movzbl %al, %eax ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21243 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
0 files changed, 0 insertions, 0 deletions