llvm-mirror/test/CodeGen/X86/2to3-inc64.ll
Dan Gohman e033f7c41e Revert r42653 and forward-port the code that lets INC64_32r be
converted to LEA64_32r in x86's convertToThreeAddress. This
replaces code like this:
   movl  %esi, %edi
   inc   %edi
with this:
   lea   1(%rsi), %edi
which appears to be beneficial.

llvm-svn: 61830
2009-01-06 23:34:46 +00:00

22 lines
721 B
LLVM

; RUN: llvm-as < %s | llc -march=x86-64 -o %t -f -stats -info-output-file - | \
; RUN: grep {asm-printer} | grep {Number of machine instrs printed} | grep 5
; RUN: grep {leal 1(\%rsi),} %t
define fastcc zeroext i8 @fullGtU(i32 %i1, i32 %i2) nounwind {
entry:
%0 = add i32 %i2, 1 ; <i32> [#uses=1]
%1 = sext i32 %0 to i64 ; <i64> [#uses=1]
%2 = getelementptr i8* null, i64 %1 ; <i8*> [#uses=1]
%3 = load i8* %2, align 1 ; <i8> [#uses=1]
%4 = icmp eq i8 0, %3 ; <i1> [#uses=1]
br i1 %4, label %bb3, label %bb34
bb3: ; preds = %entry
%5 = add i32 %i2, 4 ; <i32> [#uses=0]
ret i8 0
bb34: ; preds = %entry
ret i8 0
}