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llvm-project/llvm/test/CodeGen/PowerPC/setrnd.ll

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[PowerPC] Add the support for __builtin_setrnd() Summary: PowerPC64/PowerPC64le supports the builtin function __builtin_setrnd to set the floating point rounding mode. This function will use the least significant two bits of integer argument to set the floating point rounding mode. double __builtin_setrnd(int mode); The effective values for mode are: 0 - round to nearest 1 - round to zero 2 - round to +infinity 3 - round to -infinity Note that the mode argument will modulo 4, so if the int argument is greater than 3, it will only use the least significant two bits of the mode. Namely, builtin_setrnd(102)) is equal to builtin_setrnd(2). Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D59405 llvm-svn: 357241
2019-03-29 16:45:24 +08:00
; RUN: llc -mcpu=pwr9 -mtriple=powerpc64le-unknown-linux-gnu < %s \
; RUN: -verify-machineinstrs | FileCheck %s
; RUN: llc -mcpu=pwr7 -mtriple=powerpc64le-unknown-linux-gnu < %s \
; RUN: -verify-machineinstrs | FileCheck -check-prefix=CHECK-PWR7 %s
define double @test_setrndi() {
entry:
%0 = tail call double @llvm.ppc.setrnd(i32 2)
ret double %0
; CHECK-LABEL: @test_setrndi
; CHECK: # %bb.0:
; CHECK-DAG: mffs 1
; CHECK-DAG: mtfsb0 31
; CHECK-DAG: mtfsb1 30
; CHECK: blr
}
define double @test_setrnd(i32 signext %x) {
entry:
%0 = tail call double @llvm.ppc.setrnd(i32 %x)
ret double %0
; CHECK-LABEL: @test_setrnd
; CHECK: # %bb.0:
; CHECK-DAG: mffs 1
; CHECK-DAG: mffprd [[REG1:[0-9]+]], 1
; CHECK-DAG: rldimi [[REG1]], 3, 0, 62
[PowerPC] Support extended mnemonics mffprwz etc. Summary: Reported in https://github.com/opencv/opencv/issues/15413. We have serveral extended mnemonics for Move To/From Vector-Scalar Register Instructions eg: mffprd,mtfprd etc. We only support one of them, this patch add the others. Reviewers: nemanjai, steven.zhang, hfinkel, #powerpc Reviewed By: hfinkel Subscribers: wuzish, qcolombet, hiraditya, kbarton, MaskRay, shchenz, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66963 llvm-svn: 370411
2019-08-30 05:53:59 +08:00
; CHECK-DAG: mtfprd [[REG2:[0-9]+]], [[REG1]]
[PowerPC] Add the support for __builtin_setrnd() Summary: PowerPC64/PowerPC64le supports the builtin function __builtin_setrnd to set the floating point rounding mode. This function will use the least significant two bits of integer argument to set the floating point rounding mode. double __builtin_setrnd(int mode); The effective values for mode are: 0 - round to nearest 1 - round to zero 2 - round to +infinity 3 - round to -infinity Note that the mode argument will modulo 4, so if the int argument is greater than 3, it will only use the least significant two bits of the mode. Namely, builtin_setrnd(102)) is equal to builtin_setrnd(2). Reviewed By: jsji Differential Revision: https://reviews.llvm.org/D59405 llvm-svn: 357241
2019-03-29 16:45:24 +08:00
; CHECK-DAG: mtfsf 255, [[REG2]]
; CHECK: blr
; CHECK-PWR7-LABEL: @test_setrnd
; CHECK-PWR7: # %bb.0:
; CHECK-PWR7-DAG: mffs 1
; CHECK-PWR7-DAG: stfd 1, -8(1)
; CHECK-PWR7-DAG: ld [[REG1:[0-9]+]], -8(1)
; CHECK-PWR7-DAG: rldimi [[REG1]], 3, 0, 62
; CHECK-PWR7-DAG: std [[REG1]], -16(1)
; CHECK-PWR7-DAG: lfd [[REG2:[0-9]+]], -16(1)
; CHECK-PWR7-DAG: mtfsf 255, [[REG2]]
; CHECK-PWR7: blr
}
declare double @llvm.ppc.setrnd(i32)