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llvm-project/llvm/test/CodeGen/WebAssembly/unused-argument.ll

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WebAssembly: handle unused function arguments. Subscribers: llvm-commits, sunfish, jfb Differential Revision: http://reviews.llvm.org/D11684 llvm-svn: 243770
2015-08-01 02:13:27 +08:00
; RUN: llc < %s -asm-verbose=false | FileCheck %s
; Make sure that argument offsets are correct even if some arguments are unused.
[WebAssembly] Use the default alignment for SIMD types. Previously WebAssembly's datalayout string had -v128:8:128. This had been an attempt to declare a certain level of support for unaligned SIMD accesses. However, clang makes its own determinations for SIMD alignment that are independent of the datalayout string, so this wasn't actually meaningful. llvm-svn: 245494
2015-08-20 04:30:20 +08:00
target datalayout = "e-p:32:32-i64:64-n32:64-S128"
WebAssembly: handle unused function arguments. Subscribers: llvm-commits, sunfish, jfb Differential Revision: http://reviews.llvm.org/D11684 llvm-svn: 243770
2015-08-01 02:13:27 +08:00
target triple = "wasm32-unknown-unknown"
[WebAssembly] Switch to a more traditional assembly syntax This new syntax is built around putting each instruction on its own line in a "mnemonic op, op, op" like syntax. It also uses conventional data section directives like ".byte" and so on rather than requiring everything to be in hierarchical S-expression format. This is a more natural syntax for a ".s" file format from the perspective of LLVM MC and related tools, while remaining easy to translate into other forms as needed. llvm-svn: 249364
2015-10-06 08:27:55 +08:00
; CHECK-LABEL: unused_first:
; CHECK-NEXT: .param i32{{$}}
; CHECK-NEXT: .param i32{{$}}
; CHECK-NEXT: .result i32{{$}}
WebAssembly: update syntax Summary: Follow the same syntax as for the spec repo. Both have evolved slightly independently and need to converge again. This, along with wasmate changes, allows me to do the following: echo "int add(int a, int b) { return a + b; }" > add.c ./out/bin/clang -O2 -S --target=wasm32-unknown-unknown add.c -o add.wack ./experimental/prototype-wasmate/wasmate.py add.wack > add.wast ./sexpr-wasm-prototype/out/sexpr-wasm add.wast -o add.wasm ./sexpr-wasm-prototype/third_party/v8-native-prototype/v8/v8/out/Release/d8 -e "print(WASM.instantiateModule(readbuffer('add.wasm'), {print:print}).add(42, 1337));" As you'd expect, the d8 shell prints out the right value. Reviewers: sunfish Subscribers: jfb, llvm-commits, dschuff Differential Revision: http://reviews.llvm.org/D13712 llvm-svn: 250480
2015-10-16 08:53:49 +08:00
; CHECK-NEXT: .local i32{{$}}
[WebAssembly] Reapply r252858, with svn add for the new file. Switch to MC for instruction printing. This encompasses several changes which are all interconnected: - Use the MC framework for printing almost all instructions. - AsmStrings are now live. - This introduces an indirection between LLVM vregs and WebAssembly registers, and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping. This addresses some basic issues with argument registers and unused registers. - The way ARGUMENT instructions are handled no longer generates redundant get_local+set_local for every argument. This also changes the assembly syntax somewhat; most notably, MC's printing does not use sigils on label names, so those are no longer present, and push/pop now have a sigil to keep them unambiguous. The usage of set_local/get_local/$push/$pop will continue to evolve significantly. This patch is just one step of a larger change. llvm-svn: 252910
2015-11-13 01:04:33 +08:00
; CHECK-NEXT: return (get_local 1){{$}}
WebAssembly: handle unused function arguments. Subscribers: llvm-commits, sunfish, jfb Differential Revision: http://reviews.llvm.org/D11684 llvm-svn: 243770
2015-08-01 02:13:27 +08:00
define i32 @unused_first(i32 %x, i32 %y) {
ret i32 %y
}
[WebAssembly] Switch to a more traditional assembly syntax This new syntax is built around putting each instruction on its own line in a "mnemonic op, op, op" like syntax. It also uses conventional data section directives like ".byte" and so on rather than requiring everything to be in hierarchical S-expression format. This is a more natural syntax for a ".s" file format from the perspective of LLVM MC and related tools, while remaining easy to translate into other forms as needed. llvm-svn: 249364
2015-10-06 08:27:55 +08:00
; CHECK-LABEL: unused_second:
; CHECK-NEXT: .param i32{{$}}
; CHECK-NEXT: .param i32{{$}}
; CHECK-NEXT: .result i32{{$}}
WebAssembly: update syntax Summary: Follow the same syntax as for the spec repo. Both have evolved slightly independently and need to converge again. This, along with wasmate changes, allows me to do the following: echo "int add(int a, int b) { return a + b; }" > add.c ./out/bin/clang -O2 -S --target=wasm32-unknown-unknown add.c -o add.wack ./experimental/prototype-wasmate/wasmate.py add.wack > add.wast ./sexpr-wasm-prototype/out/sexpr-wasm add.wast -o add.wasm ./sexpr-wasm-prototype/third_party/v8-native-prototype/v8/v8/out/Release/d8 -e "print(WASM.instantiateModule(readbuffer('add.wasm'), {print:print}).add(42, 1337));" As you'd expect, the d8 shell prints out the right value. Reviewers: sunfish Subscribers: jfb, llvm-commits, dschuff Differential Revision: http://reviews.llvm.org/D13712 llvm-svn: 250480
2015-10-16 08:53:49 +08:00
; CHECK-NEXT: .local i32{{$}}
[WebAssembly] Reapply r252858, with svn add for the new file. Switch to MC for instruction printing. This encompasses several changes which are all interconnected: - Use the MC framework for printing almost all instructions. - AsmStrings are now live. - This introduces an indirection between LLVM vregs and WebAssembly registers, and a new pass, WebAssemblyRegNumbering, for computing a basic the mapping. This addresses some basic issues with argument registers and unused registers. - The way ARGUMENT instructions are handled no longer generates redundant get_local+set_local for every argument. This also changes the assembly syntax somewhat; most notably, MC's printing does not use sigils on label names, so those are no longer present, and push/pop now have a sigil to keep them unambiguous. The usage of set_local/get_local/$push/$pop will continue to evolve significantly. This patch is just one step of a larger change. llvm-svn: 252910
2015-11-13 01:04:33 +08:00
; CHECK-NEXT: return (get_local 0){{$}}
WebAssembly: handle unused function arguments. Subscribers: llvm-commits, sunfish, jfb Differential Revision: http://reviews.llvm.org/D11684 llvm-svn: 243770
2015-08-01 02:13:27 +08:00
define i32 @unused_second(i32 %x, i32 %y) {
ret i32 %x
}
[WebAssembly] Introduce a new pseudo-operand for unused expression results. llvm-svn: 252975
2015-11-13 08:21:05 +08:00
; CHECK-LABEL: call_something:
; CHECK-NEXT: call return_something, $discard{{$}}
; CHECK-NEXT: return{{$}}
declare i32 @return_something()
define void @call_something() {
[WebAssembly] Make indentation consistent with the other testcases. NFC. llvm-svn: 253149
2015-11-15 07:17:07 +08:00
call i32 @return_something()
ret void
[WebAssembly] Introduce a new pseudo-operand for unused expression results. llvm-svn: 252975
2015-11-13 08:21:05 +08:00
}