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3319b28944
Add assembler support for instructions manipulating the FPC. Also add codegen support via the GCC compatibility builtins: __builtin_s390_sfpc __builtin_s390_efpc llvm-svn: 288525
68 lines
1.3 KiB
LLVM
68 lines
1.3 KiB
LLVM
; Test floating-point control register intrinsics.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare void @llvm.s390.sfpc(i32)
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declare i32 @llvm.s390.efpc()
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; SFPC.
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define void @test_sfpc(i32 %fpc) {
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; CHECK-LABEL: test_sfpc:
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; CHECK: sfpc %r2
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; CHECK: br %r14
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call void @llvm.s390.sfpc(i32 %fpc)
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ret void
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}
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; EFPC.
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define i32 @test_efpc() {
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; CHECK-LABEL: test_efpc:
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; CHECK: efpc %r2
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; CHECK: br %r14
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%res = call i32 @llvm.s390.efpc()
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ret i32 %res
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}
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; LFPC.
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define void @test_lfpc1(i32 *%ptr) {
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; CHECK-LABEL: test_lfpc1:
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; CHECK: lfpc 0(%r2)
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; CHECK: br %r14
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%fpc = load i32, i32 *%ptr
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call void @llvm.s390.sfpc(i32 %fpc)
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ret void
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}
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; LFPC with offset.
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define void @test_lfpc2(i32 *%ptr) {
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; CHECK-LABEL: test_lfpc2:
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; CHECK: lfpc 4092(%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr i32, i32 *%ptr, i32 1023
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%fpc = load i32, i32 *%ptr1
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call void @llvm.s390.sfpc(i32 %fpc)
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ret void
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}
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; STFPC.
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define void @test_stfpc1(i32 *%ptr) {
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; CHECK-LABEL: test_stfpc1:
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; CHECK: stfpc 0(%r2)
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; CHECK: br %r14
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%fpc = call i32 @llvm.s390.efpc()
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store i32 %fpc, i32 *%ptr
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ret void
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}
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; STFPC with offset.
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define void @test_stfpc2(i32 *%ptr) {
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; CHECK-LABEL: test_stfpc2:
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; CHECK: stfpc 4092(%r2)
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; CHECK: br %r14
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%fpc = call i32 @llvm.s390.efpc()
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%ptr1 = getelementptr i32, i32 *%ptr, i32 1023
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store i32 %fpc, i32 *%ptr1
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ret void
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}
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