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llvm-mirror/test/CodeGen/X86/avx-vbroadcast.ll
Nadav Rotem 8957364ae5 AVX2: Build splat vectors by broadcasting a scalar from the constant pool.
Previously we used three instructions to broadcast an immediate value into a
vector register.
On Sandybridge we continue to load the broadcasted value from the constant pool.

llvm-svn: 154284
2012-04-08 12:54:54 +00:00

115 lines
4.0 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx -mattr=+avx | FileCheck %s
; CHECK: vbroadcastsd (%
define <4 x i64> @A(i64* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load i64* %ptr, align 8
%vecinit.i = insertelement <4 x i64> undef, i64 %q, i32 0
%vecinit2.i = insertelement <4 x i64> %vecinit.i, i64 %q, i32 1
%vecinit4.i = insertelement <4 x i64> %vecinit2.i, i64 %q, i32 2
%vecinit6.i = insertelement <4 x i64> %vecinit4.i, i64 %q, i32 3
ret <4 x i64> %vecinit6.i
}
; CHECK: vbroadcastss (%
define <8 x i32> @B(i32* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load i32* %ptr, align 4
%vecinit.i = insertelement <8 x i32> undef, i32 %q, i32 0
%vecinit2.i = insertelement <8 x i32> %vecinit.i, i32 %q, i32 1
%vecinit4.i = insertelement <8 x i32> %vecinit2.i, i32 %q, i32 2
%vecinit6.i = insertelement <8 x i32> %vecinit4.i, i32 %q, i32 3
ret <8 x i32> %vecinit6.i
}
; CHECK: vbroadcastsd (%
define <4 x double> @C(double* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load double* %ptr, align 8
%vecinit.i = insertelement <4 x double> undef, double %q, i32 0
%vecinit2.i = insertelement <4 x double> %vecinit.i, double %q, i32 1
%vecinit4.i = insertelement <4 x double> %vecinit2.i, double %q, i32 2
%vecinit6.i = insertelement <4 x double> %vecinit4.i, double %q, i32 3
ret <4 x double> %vecinit6.i
}
; CHECK: vbroadcastss (%
define <8 x float> @D(float* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load float* %ptr, align 4
%vecinit.i = insertelement <8 x float> undef, float %q, i32 0
%vecinit2.i = insertelement <8 x float> %vecinit.i, float %q, i32 1
%vecinit4.i = insertelement <8 x float> %vecinit2.i, float %q, i32 2
%vecinit6.i = insertelement <8 x float> %vecinit4.i, float %q, i32 3
ret <8 x float> %vecinit6.i
}
;;;; 128-bit versions
; CHECK: vbroadcastss (%
define <4 x float> @e(float* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load float* %ptr, align 4
%vecinit.i = insertelement <4 x float> undef, float %q, i32 0
%vecinit2.i = insertelement <4 x float> %vecinit.i, float %q, i32 1
%vecinit4.i = insertelement <4 x float> %vecinit2.i, float %q, i32 2
%vecinit6.i = insertelement <4 x float> %vecinit4.i, float %q, i32 3
ret <4 x float> %vecinit6.i
}
; CHECK: _e2
; CHECK-NOT: vbroadcastss
; CHECK: ret
define <4 x float> @_e2(float* %ptr) nounwind uwtable readnone ssp {
%vecinit.i = insertelement <4 x float> undef, float 0xbf80000000000000, i32 0
%vecinit2.i = insertelement <4 x float> %vecinit.i, float 0xbf80000000000000, i32 1
%vecinit4.i = insertelement <4 x float> %vecinit2.i, float 0xbf80000000000000, i32 2
%vecinit6.i = insertelement <4 x float> %vecinit4.i, float 0xbf80000000000000, i32 3
ret <4 x float> %vecinit6.i
}
; CHECK: vbroadcastss (%
define <4 x i32> @F(i32* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load i32* %ptr, align 4
%vecinit.i = insertelement <4 x i32> undef, i32 %q, i32 0
%vecinit2.i = insertelement <4 x i32> %vecinit.i, i32 %q, i32 1
%vecinit4.i = insertelement <4 x i32> %vecinit2.i, i32 %q, i32 2
%vecinit6.i = insertelement <4 x i32> %vecinit4.i, i32 %q, i32 3
ret <4 x i32> %vecinit6.i
}
; Unsupported vbroadcasts
; CHECK: _G
; CHECK-NOT: broadcast (%
; CHECK: ret
define <2 x i64> @G(i64* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load i64* %ptr, align 8
%vecinit.i = insertelement <2 x i64> undef, i64 %q, i32 0
%vecinit2.i = insertelement <2 x i64> %vecinit.i, i64 %q, i32 1
ret <2 x i64> %vecinit2.i
}
; CHECK: _H
; CHECK-NOT: broadcast
; CHECK: ret
define <4 x i32> @H(<4 x i32> %a) {
%x = shufflevector <4 x i32> %a, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
ret <4 x i32> %x
}
; CHECK: _I
; CHECK-NOT: broadcast (%
; CHECK: ret
define <2 x double> @I(double* %ptr) nounwind uwtable readnone ssp {
entry:
%q = load double* %ptr, align 4
%vecinit.i = insertelement <2 x double> undef, double %q, i32 0
%vecinit2.i = insertelement <2 x double> %vecinit.i, double %q, i32 1
ret <2 x double> %vecinit2.i
}