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Implement patterns for extloadi8 and extloadi16

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166960 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reed Kotler 2012-10-29 19:39:04 +00:00
parent e669c930a6
commit 576b1dbbef
2 changed files with 73 additions and 0 deletions
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4
lib/Target/Mips/Mips16InstrInfo.td
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@ -1508,3 +1508,7 @@ class Wrapper16Pat<SDNode node, Instruction ADDiuOp, RegisterClass RC>:
def : Wrapper16Pat<tglobaladdr, AddiuRxRxImmX16, CPU16Regs>;
def : Wrapper16Pat<tglobaltlsaddr, AddiuRxRxImmX16, CPU16Regs>;
def : Mips16Pat<(i32 (extloadi8 addr16:$src)),
(LbuRxRyOffMemX16 addr16:$src)>;
def : Mips16Pat<(i32 (extloadi16 addr16:$src)),
(LhuRxRyOffMemX16 addr16:$src)>;

69
test/CodeGen/Mips/misha.ll Normal file
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@ -0,0 +1,69 @@
; RUN: llc -march=mipsel -mcpu=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16
define i32 @sumc(i8* nocapture %to, i8* nocapture %from, i32) nounwind {
entry:
%sext = shl i32 %0, 16
%conv = ashr exact i32 %sext, 16
%cmp8 = icmp eq i32 %conv, 0
br i1 %cmp8, label %for.end, label %for.body.lr.ph
for.body.lr.ph: ; preds = %entry
%.pre = load i8* %to, align 1
br label %for.body
for.body: ; preds = %for.body.lr.ph, %for.body
%1 = phi i8 [ %.pre, %for.body.lr.ph ], [ %conv4, %for.body ]
%i.010 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%from.addr.09 = phi i8* [ %from, %for.body.lr.ph ], [ %incdec.ptr, %for.body ]
%incdec.ptr = getelementptr inbounds i8* %from.addr.09, i32 1
%2 = load i8* %from.addr.09, align 1
%conv27 = zext i8 %2 to i32
%conv36 = zext i8 %1 to i32
%add = add nsw i32 %conv36, %conv27
%conv4 = trunc i32 %add to i8
store i8 %conv4, i8* %to, align 1
%inc = add nsw i32 %i.010, 1
%cmp = icmp eq i32 %inc, %conv
br i1 %cmp, label %for.end, label %for.body
; 16: sumc:
; 16: lbu ${{[0-9]+}}, 0(${{[0-9]+}})
; 16: lbu ${{[0-9]+}}, 0(${{[0-9]+}})
; 16: sum:
; 16: lhu ${{[0-9]+}}, 0(${{[0-9]+}})
; 16: lhu ${{[0-9]+}}, 0(${{[0-9]+}})
for.end: ; preds = %for.body, %entry
ret i32 undef
}
define i32 @sum(i16* nocapture %to, i16* nocapture %from, i32) nounwind {
entry:
%sext = shl i32 %0, 16
%conv = ashr exact i32 %sext, 16
%cmp8 = icmp eq i32 %conv, 0
br i1 %cmp8, label %for.end, label %for.body.lr.ph
for.body.lr.ph: ; preds = %entry
%.pre = load i16* %to, align 2
br label %for.body
for.body: ; preds = %for.body.lr.ph, %for.body
%1 = phi i16 [ %.pre, %for.body.lr.ph ], [ %conv4, %for.body ]
%i.010 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
%from.addr.09 = phi i16* [ %from, %for.body.lr.ph ], [ %incdec.ptr, %for.body ]
%incdec.ptr = getelementptr inbounds i16* %from.addr.09, i32 1
%2 = load i16* %from.addr.09, align 2
%conv27 = zext i16 %2 to i32
%conv36 = zext i16 %1 to i32
%add = add nsw i32 %conv36, %conv27
%conv4 = trunc i32 %add to i16
store i16 %conv4, i16* %to, align 2
%inc = add nsw i32 %i.010, 1
%cmp = icmp eq i32 %inc, %conv
br i1 %cmp, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret i32 undef
}