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41 lines
1.8 KiB
LLVM
41 lines
1.8 KiB
LLVM
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; RUN: llc < %s -verify-machineinstrs -mtriple=i386-apple-darwin -mcpu=corei7 | FileCheck %s
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; rdar://5571034
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; This requires physreg joining, %13 is live everywhere:
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; 304L %cl = COPY %13:sub_8bit; GR32_ABCD:%13
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; 320L %15 = COPY %19; GR32:%15 GR32_NOSP:%19
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; 336L %15 = SAR32rCL %15, implicit dead %eflags, implicit killed %cl; GR32:%15
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define void @foo(i32* nocapture %quadrant, i32* nocapture %ptr, i32 %bbSize, i32 %bbStart, i32 %shifts) nounwind ssp {
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; CHECK-LABEL: foo:
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entry:
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%j.03 = add i32 %bbSize, -1 ; <i32> [#uses=2]
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%0 = icmp sgt i32 %j.03, -1 ; <i1> [#uses=1]
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br i1 %0, label %bb.nph, label %return
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bb.nph: ; preds = %entry
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%tmp9 = add i32 %bbStart, %bbSize ; <i32> [#uses=1]
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%tmp10 = add i32 %tmp9, -1 ; <i32> [#uses=1]
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br label %bb
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bb: ; preds = %bb, %bb.nph
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; CHECK: %bb
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; CHECK-NOT: movb {{.*}}l, %cl
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; CHECK: sarl %cl
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%indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3]
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%j.06 = sub i32 %j.03, %indvar ; <i32> [#uses=1]
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%tmp11 = sub i32 %tmp10, %indvar ; <i32> [#uses=1]
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%scevgep = getelementptr i32, i32* %ptr, i32 %tmp11 ; <i32*> [#uses=1]
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%1 = load i32, i32* %scevgep, align 4 ; <i32> [#uses=1]
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%2 = ashr i32 %j.06, %shifts ; <i32> [#uses=1]
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%3 = and i32 %2, 65535 ; <i32> [#uses=1]
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%4 = getelementptr inbounds i32, i32* %quadrant, i32 %1 ; <i32*> [#uses=1]
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store i32 %3, i32* %4, align 4
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%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, %bbSize ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %bb
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return: ; preds = %bb, %entry
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ret void
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}
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