22 lines
871 B
LLVM
22 lines
871 B
LLVM
; REQUIRES: asserts
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; RUN: llc < %s -mtriple=thumbv7-apple-ios -disable-ifcvt-diamond -stats 2>&1 | FileCheck %s
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; Evaluate the two vld1.8 instructions in separate MBB's,
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; instead of stalling on one and conditionally overwriting its result.
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;
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; Update: After if-conversion the two vld1.8 instructions are in the same MBB
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; again. So we disable this if-conversion to eliminate its influence to this
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; test.
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; CHECK-NOT: Number of pipeline stalls
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define <16 x i8> @multiselect(i32 %avail, i8* %foo, i8* %bar) {
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entry:
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%vld1 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %foo, i32 1)
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%vld2 = call <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* %bar, i32 1)
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%and = and i32 %avail, 3
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%tobool = icmp eq i32 %and, 0
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%retv = select i1 %tobool, <16 x i8> %vld1, <16 x i8> %vld2
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ret <16 x i8> %retv
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}
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declare <16 x i8> @llvm.arm.neon.vld1.v16i8.p0i8(i8* , i32 )
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