llvm/test/CodeGen/X86/lea.ll
2009-09-08 23:54:48 +00:00

35 lines
741 B
LLVM

; RUN: llc < %s -march=x86-64 | FileCheck %s
define i32 @test1(i32 %x) nounwind {
%tmp1 = shl i32 %x, 3
%tmp2 = add i32 %tmp1, 7
ret i32 %tmp2
; CHECK: test1:
; CHECK: leal 7(,%rdi,8), %eax
}
; ISel the add of -4 with a neg and use an lea for the rest of the
; arithemtic.
define i32 @test2(i32 %x_offs) nounwind readnone {
entry:
%t0 = icmp sgt i32 %x_offs, 4
br i1 %t0, label %bb.nph, label %bb2
bb.nph:
%tmp = add i32 %x_offs, -5
%tmp6 = lshr i32 %tmp, 2
%tmp7 = mul i32 %tmp6, -4
%tmp8 = add i32 %tmp7, %x_offs
%tmp9 = add i32 %tmp8, -4
ret i32 %tmp9
bb2:
ret i32 %x_offs
; CHECK: test2:
; CHECK: leal -5(%rdi), %eax
; CHECK: andl $-4, %eax
; CHECK: negl %eax
; CHECK: leal -4(%rdi,%rax), %eax
}