905bb5bddb
The change implements custom lowering of `get_fpmode`, `set_fpmode` and `reset_fpmode` for RISCV target. The implementation is aligned with the functions `fegetmode` and `fesetmode` in GLIBC.
72 lines
2.1 KiB
LLVM
72 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/iXLen/i32/g' %s | llc -mtriple=riscv32 -mattr=+f -verify-machineinstrs -O0 | FileCheck %s
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; RUN: sed 's/iXLen/i64/g' %s | llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs -O0 | FileCheck %s
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define iXLen @func_get_fpenv() {
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; CHECK-LABEL: func_get_fpenv:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: frcsr a0
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; CHECK-NEXT: ret
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entry:
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%fpenv = call iXLen @llvm.get.fpenv.iXLen()
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ret iXLen %fpenv
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}
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define void @func_set_fpenv(iXLen %fpenv) {
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; CHECK-LABEL: func_set_fpenv:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: fscsr a0
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; CHECK-NEXT: ret
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entry:
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call void @llvm.set.fpenv.iXLen(iXLen %fpenv)
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ret void
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}
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define void @func_reset_fpenv() {
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; CHECK-LABEL: func_reset_fpenv:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: fscsr zero
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; CHECK-NEXT: ret
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entry:
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call void @llvm.reset.fpenv()
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ret void
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}
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define iXLen @func_get_fpmode() {
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; CHECK-LABEL: func_get_fpmode:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: frcsr a0
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; CHECK-NEXT: ret
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entry:
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%fpenv = call iXLen @llvm.get.fpmode.iXLen()
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ret iXLen %fpenv
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}
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define void @func_set_fpmode(iXLen %fpmode) {
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; CHECK-LABEL: func_set_fpmode:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: li a1, -32
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; CHECK-NEXT: csrc fcsr, a1
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; CHECK-NEXT: andi a0, a0, -32
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; CHECK-NEXT: csrs fcsr, a0
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; CHECK-NEXT: ret
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entry:
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call void @llvm.set.fpmode.iXLen(iXLen %fpmode)
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ret void
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}
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define void @func_reset_fpmode() {
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; CHECK-LABEL: func_reset_fpmode:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: li a0, -32
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; CHECK-NEXT: csrc fcsr, a0
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; CHECK-NEXT: ret
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entry:
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call void @llvm.reset.fpmode()
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ret void
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}
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