[clang] [amdgpu] Pass variadic arguments without splitting (PR #94083)
Matt Arsenault via cfe-commits
cfe-commits at lists.llvm.org
Thu Jun 6 02:52:44 PDT 2024
================
@@ -0,0 +1,293 @@
+// REQUIRES: amdgpu-registered-target
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature
+// RUN: %clang_cc1 -cc1 -std=c23 -triple amdgcn-amd-amdhsa -emit-llvm -O1 %s -o - | FileCheck %s
+
+void sink_0(...);
+void sink_1(int, ...);
+void sink_2(double, int, ...);
+
+// Simple scalar values
+
+// CHECK-LABEL: define {{[^@]+}}@zero_varargs
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0() #[[ATTR2:[0-9]+]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void zero_varargs(int f0, double f1)
+{
+ sink_0();
+ sink_1(f0);
+ sink_2(f1, f0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_i32
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i32 noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(i32 noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], i32 noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], i32 noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_i32(int f0, double f1, int v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_ptr
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], ptr noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(ptr noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], ptr noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], ptr noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_ptr(int f0, double f1, void* v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_f64
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], double noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(double noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], double noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], double noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_f64(int f0, double f1, double v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+
+// C has various type promotion rules for variadics
+
+// CHECK-LABEL: define {{[^@]+}}@one_i8
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i8 noundef signext [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[CONV:%.*]] = sext i8 [[V0]] to i32
+// CHECK-NEXT: tail call void (...) @sink_0(i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_i8(int f0, double f1, char v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_i16
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i16 noundef signext [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[CONV:%.*]] = sext i16 [[V0]] to i32
+// CHECK-NEXT: tail call void (...) @sink_0(i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], i32 noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_i16(int f0, double f1, short v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_f32
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], float noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[CONV:%.*]] = fpext float [[V0]] to double
+// CHECK-NEXT: tail call void (...) @sink_0(double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_f32(int f0, double f1, float v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+
+// Various half types. _Float16 is passed as half and __fp16 as double
+
+// CHECK-LABEL: define {{[^@]+}}@one_f16a
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], half noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(half noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], half noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], half noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_f16a(int f0, double f1, _Float16 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_f16b
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], half noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[CONV:%.*]] = fpext half [[V0]] to double
+// CHECK-NEXT: tail call void (...) @sink_0(double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], double noundef [[CONV]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_f16b(int f0, double f1, __fp16 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@one_f16c
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], bfloat noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(bfloat noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], bfloat noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], bfloat noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_f16c(int f0, double f1, __bf16 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// Simple composites
+
+typedef struct
+{
+ double x0;
+ double x1;
+} pair_f64;
+
+// CHECK-LABEL: define {{[^@]+}}@one_pair_f64
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], double [[V0_COERCE0:%.*]], double [[V0_COERCE1:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[DOTFCA_0_INSERT:%.*]] = insertvalue [[STRUCT_PAIR_F64:%.*]] poison, double [[V0_COERCE0]], 0
+// CHECK-NEXT: [[DOTFCA_1_INSERT:%.*]] = insertvalue [[STRUCT_PAIR_F64]] [[DOTFCA_0_INSERT]], double [[V0_COERCE1]], 1
+// CHECK-NEXT: tail call void (...) @sink_0([[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], [[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], [[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_pair_f64(int f0, double f1, pair_f64 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+typedef double v2f64 __attribute__((ext_vector_type(2)));
+
+// CHECK-LABEL: define {{[^@]+}}@one_pair_v2f64
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], <2 x double> noundef [[V0:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(<2 x double> noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], <2 x double> noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], <2 x double> noundef [[V0]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_pair_v2f64(int f0, double f1, v2f64 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+typedef union
+{
+ float x0;
+ int x1;
+} union_f32_i32;
+
+// CHECK-LABEL: define {{[^@]+}}@one_pair_union_f32_i32
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i32 [[V0_COERCE:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[TMP0:%.*]] = bitcast i32 [[V0_COERCE]] to float
+// CHECK-NEXT: [[DOTFCA_0_INSERT:%.*]] = insertvalue [[UNION_UNION_F32_I32:%.*]] poison, float [[TMP0]], 0
+// CHECK-NEXT: tail call void (...) @sink_0([[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], [[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], [[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_pair_union_f32_i32(int f0, double f1, union_f32_i32 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+typedef union
+{
+ int x0;
+ float x1;
+} transparent_union_f32_i32 __attribute__((transparent_union));
+
+// CHECK-LABEL: define {{[^@]+}}@one_pair_transparent_union_f32_i32
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i32 [[V0_COERCE:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[DOTFCA_0_INSERT:%.*]] = insertvalue [[UNION_TRANSPARENT_UNION_F32_I32:%.*]] poison, i32 [[V0_COERCE]], 0
+// CHECK-NEXT: tail call void (...) @sink_0([[UNION_TRANSPARENT_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], [[UNION_TRANSPARENT_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], [[UNION_TRANSPARENT_UNION_F32_I32]] [[DOTFCA_0_INSERT]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void one_pair_transparent_union_f32_i32(int f0, double f1, transparent_union_f32_i32 v0)
+{
+ sink_0(v0);
+ sink_1(f0, v0);
+ sink_2(f1, f0, v0);
+}
+
+// Passing multiple values in the variadic pack
+
+// CHECK-LABEL: define {{[^@]+}}@multiple_one
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], i32 noundef [[V0:%.*]], double noundef [[V1:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: tail call void (...) @sink_0(i32 noundef [[V0]], double noundef [[V1]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], i32 noundef [[V0]], double noundef [[V1]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], i32 noundef [[V0]], double noundef [[V1]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void multiple_one(int f0, double f1, int v0, double v1)
+{
+ sink_0(v0, v1);
+ sink_1(f0, v0, v1);
+ sink_2(f1, f0, v0, v1);
+}
+
+// CHECK-LABEL: define {{[^@]+}}@multiple_two
+// CHECK-SAME: (i32 noundef [[F0:%.*]], double noundef [[F1:%.*]], double [[V0_COERCE0:%.*]], double [[V0_COERCE1:%.*]], float noundef [[V1:%.*]], i32 [[V2_COERCE:%.*]], i32 noundef [[V3:%.*]]) local_unnamed_addr #[[ATTR0]] {
+// CHECK-NEXT: entry:
+// CHECK-NEXT: [[TMP0:%.*]] = bitcast i32 [[V2_COERCE]] to float
+// CHECK-NEXT: [[CONV:%.*]] = fpext float [[V1]] to double
+// CHECK-NEXT: [[DOTFCA_0_INSERT16:%.*]] = insertvalue [[STRUCT_PAIR_F64:%.*]] poison, double [[V0_COERCE0]], 0
+// CHECK-NEXT: [[DOTFCA_1_INSERT:%.*]] = insertvalue [[STRUCT_PAIR_F64]] [[DOTFCA_0_INSERT16]], double [[V0_COERCE1]], 1
+// CHECK-NEXT: [[DOTFCA_0_INSERT:%.*]] = insertvalue [[UNION_UNION_F32_I32:%.*]] poison, float [[TMP0]], 0
+// CHECK-NEXT: tail call void (...) @sink_0([[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]], double noundef [[CONV]], [[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]], i32 noundef [[V3]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (i32, ...) @sink_1(i32 noundef [[F0]], [[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]], double noundef [[CONV]], [[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]], i32 noundef [[V3]]) #[[ATTR2]]
+// CHECK-NEXT: tail call void (double, i32, ...) @sink_2(double noundef [[F1]], i32 noundef [[F0]], [[STRUCT_PAIR_F64]] [[DOTFCA_1_INSERT]], double noundef [[CONV]], [[UNION_UNION_F32_I32]] [[DOTFCA_0_INSERT]], i32 noundef [[V3]]) #[[ATTR2]]
+// CHECK-NEXT: ret void
+//
+void multiple_two(int f0, double f1, pair_f64 v0, float v1, union_f32_i32 v2, int v3)
+{
+ sink_0(v0, v1, v2, v3);
+ sink_1(f0, v0, v1, v2, v3);
+ sink_2(f1, f0, v0, v1, v2, v3);
+}
----------------
arsenm wrote:
Missing big tests?
https://github.com/llvm/llvm-project/pull/94083
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