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a6d602a5c1
variable increment / decrement slighter high priority. This has major impact on some micro-benchmarks. On MultiSource/Applications and spec tests, it's a minor win. It also reduce 256.bzip instruction count by 8%, 55 on 164.gzip on i386 / Darwin. llvm-svn: 82485
37 lines
1.4 KiB
LLVM
37 lines
1.4 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-darwin10.0 -relocation-model=pic | FileCheck %s
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define void @dot(i16* nocapture %A, i32 %As, i16* nocapture %B, i32 %Bs, i16* nocapture %C, i32 %N) nounwind ssp {
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; CHECK: dot:
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; CHECK: decl %
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; CHECK-NEXT: jne
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entry:
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%0 = icmp sgt i32 %N, 0 ; <i1> [#uses=1]
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br i1 %0, label %bb, label %bb2
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bb: ; preds = %bb, %entry
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%i.03 = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=3]
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%sum.04 = phi i32 [ 0, %entry ], [ %10, %bb ] ; <i32> [#uses=1]
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%1 = mul i32 %i.03, %As ; <i32> [#uses=1]
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%2 = getelementptr i16* %A, i32 %1 ; <i16*> [#uses=1]
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%3 = load i16* %2, align 2 ; <i16> [#uses=1]
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%4 = sext i16 %3 to i32 ; <i32> [#uses=1]
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%5 = mul i32 %i.03, %Bs ; <i32> [#uses=1]
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%6 = getelementptr i16* %B, i32 %5 ; <i16*> [#uses=1]
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%7 = load i16* %6, align 2 ; <i16> [#uses=1]
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%8 = sext i16 %7 to i32 ; <i32> [#uses=1]
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%9 = mul i32 %8, %4 ; <i32> [#uses=1]
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%10 = add i32 %9, %sum.04 ; <i32> [#uses=2]
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%indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1]
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br i1 %exitcond, label %bb1.bb2_crit_edge, label %bb
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bb1.bb2_crit_edge: ; preds = %bb
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%phitmp = trunc i32 %10 to i16 ; <i16> [#uses=1]
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br label %bb2
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bb2: ; preds = %entry, %bb1.bb2_crit_edge
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%sum.0.lcssa = phi i16 [ %phitmp, %bb1.bb2_crit_edge ], [ 0, %entry ] ; <i16> [#uses=1]
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store i16 %sum.0.lcssa, i16* %C, align 2
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ret void
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}
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