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hanchenye-llvm-project/llvm/test/CodeGen/X86/2007-08-10-SignExtSubreg.ll

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As Dan pointed out, movzbl, movsbl, and friends are nicer than their alias (movzx/movsx) because they give more information. Revert that part of the patch. llvm-svn: 129498
2011-04-14 09:46:37 +08:00
; RUN: llc < %s -march=x86 | grep {movsbl}
Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)). llvm-svn: 41010
2007-08-11 05:48:46 +08:00
@X = global i32 0 ; <i32*> [#uses=1]
manually upgrade a bunch of tests to modern syntax, and remove some that are either unreduced or only test old syntax. llvm-svn: 133228
2011-06-17 11:14:27 +08:00
define signext i8 @_Z3fooi(i32 %x) {
Increase efficiency of sign_extend_inreg by using subregisters for truncation. As the README suggests sign_extend_subreg is selected to (sext(trunc)). llvm-svn: 41010
2007-08-11 05:48:46 +08:00
entry:
store i32 %x, i32* @X, align 4
%retval67 = trunc i32 %x to i8 ; <i8> [#uses=1]
ret i8 %retval67
Convert tests using "| wc -l | grep ..." to use the count script. llvm-svn: 41097
2007-08-15 21:36:28 +08:00
}