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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
25 lines
523 B
LLVM
25 lines
523 B
LLVM
; RUN: llc < %s -mtriple=x86_64-linux | 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 zeroext i16 @t1(i32 %on_off) nounwind {
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entry:
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%0 = sub i32 %on_off, 1
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%1 = mul i32 %0, 2
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%2 = trunc i32 %1 to i16
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%3 = zext i16 %2 to i32
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%4 = trunc i32 %3 to i16
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; CHECK: lea
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ret i16 %4
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}
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define i32 @t2(i32 %on_off) nounwind {
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entry:
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%0 = sub i32 %on_off, 1
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%1 = mul i32 %0, 2
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%2 = and i32 %1, 65535
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; CHECK: lea
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ret i32 %2
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}
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