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c9165a5a41
This changes the ABI used on 32-bit x86 for passing vector arguments. Historically, clang passes the first 4 vector arguments in-register, and additional vector arguments on the stack, regardless of platform. That is different from the behavior of gcc, icc, and msvc, all of which pass only the first 3 arguments in-register. The 3-register convention is documented, unofficially, in Agner's calling convention guide, and, officially, in the recently released version 1.0 of the i386 psABI. Darwin is kept as is because the OS X ABI Function Call Guide explicitly documents the current (4-register) behavior. This fixes PR21510 Differential revision: http://reviews.llvm.org/D9644 llvm-svn: 237682
45 lines
1.6 KiB
LLVM
45 lines
1.6 KiB
LLVM
; RUN: llc < %s -mtriple=i686-apple-darwin -mattr=+avx512f | FileCheck %s --check-prefix=DARWIN
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; RUN: llc < %s -mtriple=i686-pc-linux -mattr=+avx512f | FileCheck %s --check-prefix=LINUX
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; CHECK-LABEL: test_sse:
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; DARWIN-DAG: vpaddd %xmm1, %xmm0, %xmm0
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; DARWIN-DAG: vpaddd %xmm3, %xmm2, %xmm1
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; DARWIN: vpaddd %xmm1, %xmm0, %xmm0
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; LINUX-DAG: vpaddd %xmm1, %xmm0, %xmm0
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; LINUX-DAG: vpaddd {{[0-9]+}}(%e{{s|b}}p), %xmm2, %xmm1
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; LINUX: vpaddd %xmm1, %xmm0, %xmm0
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define <4 x i32> @test_sse(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c, <4 x i32> %d) nounwind {
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%r0 = add <4 x i32> %a, %b
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%r1 = add <4 x i32> %c, %d
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%ret = add <4 x i32> %r0, %r1
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ret <4 x i32> %ret
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}
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; CHECK-LABEL: test_avx:
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; DARWIN-DAG: vpaddd %ymm1, %ymm0, %ymm0
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; DARWIN-DAG: vpaddd %ymm3, %ymm2, %ymm1
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; DARWIN: vpaddd %ymm1, %ymm0, %ymm0
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; LINUX-DAG: vpaddd %ymm1, %ymm0, %ymm0
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; LINUX-DAG: vpaddd {{[0-9]+}}(%e{{s|b}}p), %ymm2, %ymm1
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; LINUX: vpaddd %ymm1, %ymm0, %ymm0
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define <8 x i32> @test_avx(<8 x i32> %a, <8 x i32> %b, <8 x i32> %c, <8 x i32> %d) nounwind {
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%r0 = add <8 x i32> %a, %b
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%r1 = add <8 x i32> %c, %d
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%ret = add <8 x i32> %r0, %r1
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ret <8 x i32> %ret
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}
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; CHECK-LABEL: test_avx512:
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; DARWIN-DAG: vpaddd %zmm1, %zmm0, %zmm0
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; DARWIN-DAG: vpaddd %zmm3, %zmm2, %zmm1
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; DARWIN: vpaddd %zmm1, %zmm0, %zmm0
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; LINUX-DAG: vpaddd %zmm1, %zmm0, %zmm0
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; LINUX-DAG: vpaddd {{[0-9]+}}(%e{{s|b}}p), %zmm2, %zmm1
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; LINUX: vpaddd %zmm1, %zmm0, %zmm0
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define <16 x i32> @test_avx512(<16 x i32> %a, <16 x i32> %b, <16 x i32> %c, <16 x i32> %d) nounwind {
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%r0 = add <16 x i32> %a, %b
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%r1 = add <16 x i32> %c, %d
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%ret = add <16 x i32> %r0, %r1
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ret <16 x i32> %ret
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}
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