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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
60 lines
2.0 KiB
LLVM
60 lines
2.0 KiB
LLVM
; test for more complicated forms of lea operands which can be generated
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; in loop optimized cases.
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; See also http://llvm.org/bugs/show_bug.cgi?id=20016
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; RUN: llc < %s -mtriple=x86_64-linux -O2 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-linux-gnux32 -O2 | FileCheck %s -check-prefix=X32
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; RUN: llc < %s -mtriple=x86_64-nacl -O2 | FileCheck %s -check-prefix=X32
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; Function Attrs: nounwind readnone uwtable
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define void @foo(i32 %x, i32 %d) #0 {
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entry:
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%a = alloca [8 x i32], align 16
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br label %while.cond
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while.cond: ; preds = %while.cond, %entry
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%d.addr.0 = phi i32 [ %d, %entry ], [ %inc, %while.cond ]
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%arrayidx = getelementptr inbounds [8 x i32]* %a, i32 0, i32 %d.addr.0
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; CHECK: leaq -40(%rsp,%r{{[^,]*}},4), %rax
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; X32: leal -40(%rsp,%r{{[^,]*}},4), %eax
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%0 = load i32* %arrayidx, align 4
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%cmp1 = icmp eq i32 %0, 0
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%inc = add nsw i32 %d.addr.0, 1
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; CHECK: leaq 4(%r{{[^,]*}}), %r{{[^,]*}}
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; X32: leal 4(%r{{[^,]*}}), %e{{[^,]*}}
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br i1 %cmp1, label %while.end, label %while.cond
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while.end: ; preds = %while.cond
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ret void
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}
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; The same test as above but with enforsed stack realignment (%a aligned by 64)
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; to check one more case of correct lea generation.
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; Function Attrs: nounwind readnone uwtable
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define void @bar(i32 %x, i32 %d) #0 {
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entry:
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%a = alloca [8 x i32], align 64
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br label %while.cond
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while.cond: ; preds = %while.cond, %entry
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%d.addr.0 = phi i32 [ %d, %entry ], [ %inc, %while.cond ]
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%arrayidx = getelementptr inbounds [8 x i32]* %a, i32 0, i32 %d.addr.0
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; CHECK: leaq (%rsp,%r{{[^,]*}},4), %rax
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; X32: leal (%rsp,%r{{[^,]*}},4), %eax
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%0 = load i32* %arrayidx, align 4
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%cmp1 = icmp eq i32 %0, 0
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%inc = add nsw i32 %d.addr.0, 1
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; CHECK: leaq 4(%r{{[^,]*}}), %r{{[^,]*}}
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; X32: leal 4(%r{{[^,]*}}), %e{{[^,]*}}
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br i1 %cmp1, label %while.end, label %while.cond
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while.end: ; preds = %while.cond
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ret void
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}
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