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https://github.com/c64scene-ar/llvm-6502.git
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aadaac228d
Summary: Fixes http://llvm.org/bugs/show_bug.cgi?id=20016 reproducible on new lea-5.ll case. Also use RSP/RBP for x32 lea to save 1 byte used for 0x67 prefix in ESP/EBP case. Test Plan: lea tests modified to include x32/nacl and new test added Reviewers: nadav, dschuff, t.p.northover Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D4929 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216065 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
957 B
LLVM
38 lines
957 B
LLVM
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-win32 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-nacl | FileCheck %s
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define i32 @test1(i32 %x) nounwind {
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%tmp1 = shl i32 %x, 3
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%tmp2 = add i32 %tmp1, 7
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ret i32 %tmp2
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; CHECK-LABEL: test1:
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; CHECK: leal 7(,%r[[A0:di|cx]],8), %eax
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}
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; ISel the add of -4 with a neg and use an lea for the rest of the
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; arithemtic.
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define i32 @test2(i32 %x_offs) nounwind readnone {
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entry:
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%t0 = icmp sgt i32 %x_offs, 4
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br i1 %t0, label %bb.nph, label %bb2
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bb.nph:
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%tmp = add i32 %x_offs, -5
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%tmp6 = lshr i32 %tmp, 2
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%tmp7 = mul i32 %tmp6, -4
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%tmp8 = add i32 %tmp7, %x_offs
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%tmp9 = add i32 %tmp8, -4
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ret i32 %tmp9
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bb2:
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ret i32 %x_offs
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; CHECK-LABEL: test2:
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; CHECK: leal -5(%r[[A0:..]]), %eax
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; CHECK: andl $-4, %eax
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; CHECK: negl %eax
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; CHECK: leal -4(%r[[A0]],%rax), %eax
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}
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