diff options
Diffstat (limited to 'llvm/test/CodeGen/WebAssembly/tailcall.ll')
| -rw-r--r-- | llvm/test/CodeGen/WebAssembly/tailcall.ll | 89 |
1 files changed, 87 insertions, 2 deletions
diff --git a/llvm/test/CodeGen/WebAssembly/tailcall.ll b/llvm/test/CodeGen/WebAssembly/tailcall.ll index 9061ed161a3..a277b4f7bc2 100644 --- a/llvm/test/CodeGen/WebAssembly/tailcall.ll +++ b/llvm/test/CodeGen/WebAssembly/tailcall.ll @@ -1,7 +1,8 @@ ; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -mattr=+tail-call | FileCheck --check-prefixes=CHECK,SLOW %s ; RUN: llc < %s -asm-verbose=false -verify-machineinstrs -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers -fast-isel -mattr=+tail-call | FileCheck --check-prefixes=CHECK,FAST %s +; RUN: llc < %s --filetype=obj -mattr=+tail-call | obj2yaml | FileCheck --check-prefix=YAML %s -; Test that the tail-call attribute is accepted +; Test that the tail calls lower correctly target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128" target triple = "wasm32-unknown-unknown" @@ -124,6 +125,44 @@ define i32 @mismatched_prototypes() { ret i32 %v } +; CHECK-LABEL: mismatched_return_void: +; CHECK: i32.call $drop=, baz, $pop{{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}} +; CHECK: return{{$}} +define void @mismatched_return_void() { + %v = tail call i32 @baz(i32 0, i32 42, i32 6) + ret void +} + +; CHECK-LABEL: mismatched_return_f32: +; CHECK: i32.call $push[[L:[0-9]+]]=, baz, $pop{{[0-9]+}}, $pop{{[0-9]+}}, $pop{{[0-9]+}}{{$}} +; CHECK: f32.reinterpret_i32 $push[[L1:[0-9]+]]=, $pop[[L]]{{$}} +; CHECK: return $pop[[L1]]{{$}} +define float @mismatched_return_f32() { + %v = tail call i32 @baz(i32 0, i32 42, i32 6) + %u = bitcast i32 %v to float + ret float %u +} + +; CHECK-LABEL: mismatched_indirect_void: +; CHECK: i32.call_indirect $drop=, $0, $1, $2, $0{{$}} +; CHECK: return{{$}} +define void @mismatched_indirect_void(%fn %f, i32 %x, i32 %y) { + %p = extractvalue %fn %f, 0 + %v = tail call i32 %p(%fn %f, i32 %x, i32 %y) + ret void +} + +; CHECK-LABEL: mismatched_indirect_f32: +; CHECK: i32.call_indirect $push[[L:[0-9]+]]=, $0, $1, $2, $0{{$}} +; CHECK: f32.reinterpret_i32 $push[[L1:[0-9]+]]=, $pop[[L]]{{$}} +; CHECK: return $pop[[L1]]{{$}} +define float @mismatched_indirect_f32(%fn %f, i32 %x, i32 %y) { + %p = extractvalue %fn %f, 0 + %v = tail call i32 %p(%fn %f, i32 %x, i32 %y) + %u = bitcast i32 %v to float + ret float %u +} + ; CHECK-LABEL: mismatched_byval: ; CHECK: i32.store ; CHECK: return_call quux, $pop{{[0-9]+}}{{$}} @@ -135,13 +174,59 @@ define i32 @mismatched_byval(i32* %x) { ; CHECK-LABEL: varargs: ; CHECK: i32.store -; CHECK: return_call var, $1{{$}} +; CHECK: i32.call $0=, var, $1{{$}} +; CHECK: return $0{{$}} declare i32 @var(...) define i32 @varargs(i32 %x) { %v = tail call i32 (...) @var(i32 %x) ret i32 %v } +; Type transformations inhibit tail calls, even when they are nops + +; CHECK-LABEL: mismatched_return_zext: +; CHECK: i32.call +define i32 @mismatched_return_zext() { + %v = tail call i1 @foo(i1 1) + %u = zext i1 %v to i32 + ret i32 %u +} + +; CHECK-LABEL: mismatched_return_sext: +; CHECK: i32.call +define i32 @mismatched_return_sext() { + %v = tail call i1 @foo(i1 1) + %u = sext i1 %v to i32 + ret i32 %u +} + +; CHECK-LABEL: mismatched_return_trunc: +; CHECK: i32.call +declare i32 @int() +define i1 @mismatched_return_trunc() { + %v = tail call i32 @int() + %u = trunc i32 %v to i1 + ret i1 %u +} + + + +; Check that the signatures generated for external indirectly +; return-called functions include the proper return types + +; YAML-LABEL: - Index: 8 +; YAML-NEXT: ReturnType: I32 +; YAML-NEXT: ParamTypes: +; YAML-NEXT: - I32 +; YAML-NEXT: - F32 +; YAML-NEXT: - I64 +; YAML-NEXT: - F64 +define i32 @unique_caller(i32 (i32, float, i64, double)** %p) { + %f = load i32 (i32, float, i64, double)*, i32 (i32, float, i64, double)** %p + %v = tail call i32 %f(i32 0, float 0., i64 0, double 0.) + ret i32 %v +} + ; CHECK-LABEL: .section .custom_section.target_features ; CHECK-NEXT: .int8 1 ; CHECK-NEXT: .int8 43 |
