[clang] [AArch64] Implement FP8 floating-point mode helper intrinsics (PR #100608)

[via cfe-commits]

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@@ -0,0 +1,165 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c   -DUSE_NEON_H  %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c   -DUSE_SVE_H   %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c   -DUSE_SME_H   %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c++ -DUSE_NEON_H  %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c++ -DUSE_SVE_H   %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O2 -triple aarch64 -emit-llvm -x c++ -DUSE_SME_H   %s -o - | FileCheck %s
+
+// REQUIRES: aarch64-registered-target
+
+#ifdef USE_NEON_H
+#include "arm_neon.h"
+#endif
+
+#ifdef USE_SVE_H
+#include "arm_sve.h"
+#endif
+
+#ifdef USE_SME_H
+#include "arm_sme.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define INIT_ZERO 0
+#define INIT_ONES 0xffffffffffffffffU
+
+// CHECK-LABEL: define dso_local noundef i64 @test_init(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 0
+//
+fpm_t test_init() { return __arm_fpm_init(); }
+
+// CHECK-LABEL: define dso_local noundef i64 @test_src1_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 -8
+//
+fpm_t test_src1_1() {
+  return __arm_set_fpm_src1_format(INIT_ONES, __ARM_FPM_E5M2);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_src1_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 1
+//
+fpm_t test_src1_2() {
+  return __arm_set_fpm_src1_format(INIT_ZERO, __ARM_FPM_E4M3);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_src2_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 -57
+//
+fpm_t test_src2_1() {
+  return __arm_set_fpm_src2_format(INIT_ONES, __ARM_FPM_E5M2);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_src2_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 8
+//
+fpm_t test_src2_2() {
+  return __arm_set_fpm_src2_format(INIT_ZERO, __ARM_FPM_E4M3);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_dst1_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 -449
+//
+fpm_t test_dst1_1() {
+  return __arm_set_fpm_dst_format(INIT_ONES, __ARM_FPM_E5M2);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_dst2_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 64
+//
+fpm_t test_dst2_2() {
+  return __arm_set_fpm_dst_format(INIT_ZERO, __ARM_FPM_E4M3);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_of_mul_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 -16385
+//
+fpm_t test_of_mul_1() {
+  return __arm_set_fpm_overflow_mul(INIT_ONES, __ARM_FPM_INFNAN);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_of_mul_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 16384
+//
+fpm_t test_of_mul_2() {
+  return __arm_set_fpm_overflow_mul(INIT_ZERO, __ARM_FPM_SATURATE);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_of_cvt_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 -32769
+//
+fpm_t test_of_cvt_1() {
+  return __arm_set_fpm_overflow_cvt(INIT_ONES, __ARM_FPM_INFNAN);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_of_cvt_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 32768
+//
+fpm_t test_of_cvt_2() {
+  return __arm_set_fpm_overflow_cvt(INIT_ZERO, __ARM_FPM_SATURATE);
+}
+
+// CHECK-LABEL: define dso_local noundef i64 @test_lscale(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 8323072
+//
+fpm_t test_lscale() { return __arm_set_fpm_lscale(INIT_ZERO, 127); }
+
+// CHECK-LABEL: define dso_local noundef i64 @test_lscale2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 270582939648
+//
+fpm_t test_lscale2() { return __arm_set_fpm_lscale2(INIT_ZERO, 63); }
+
+// CHECK-LABEL: define dso_local noundef range(i64 0, 4294967296) i64 @test_nscale_1(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 2147483648
+//
+fpm_t test_nscale_1() { return __arm_set_fpm_nscale(INIT_ZERO, -128); }
+
+// CHECK-LABEL: define dso_local noundef range(i64 0, 4294967296) i64 @test_nscale_2(
+// CHECK-SAME: ) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT:  [[ENTRY:.*:]]
+// CHECK-NEXT:    ret i64 2130706432
+//
+fpm_t test_nscale_2() { return __arm_set_fpm_nscale(INIT_ZERO, 127); }
----------------
SpencerAbson wrote:

I hate to be picky, but is it worth testing that we are zeroing the `nscale` and `lscale` fields properly, as you have done so for the others?

https://github.com/llvm/llvm-project/pull/100608