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llvm-project/llvm/test/CodeGen/WebAssembly/userstack.ll

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[WebAssembly] Implement prolog/epilog insertion and FrameIndex elimination Summary: Use the SP32 physical register as the base for FrameIndex lowering. Update it and the __stack_pointer global var in the prolog and epilog. Extend the mapping of virtual registers to wasm locals to include the physical registers. Rather than modify the target-independent PrologEpilogInserter (which asserts that there are no virtual registers left) include a slightly-modified copy for Wasm that does not have this assertion and only clears the virtual registers if scavenging was needed (which of course it isn't for wasm). Differential Revision: http://reviews.llvm.org/D15344 llvm-svn: 255392
2015-12-12 07:49:46 +08:00
; RUN: llc < %s -asm-verbose=false | FileCheck %s
; RUN: llc < %s -asm-verbose=false -fast-isel | FileCheck %s
target datalayout = "e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
; CHECK-LABEL: alloca32:
[WebAssembly] Print an extra local decl when the user stack pointer is used Differential Revision: http://reviews.llvm.org/D15546 llvm-svn: 255815
2015-12-17 04:43:06 +08:00
; Check that there is an extra local for the stack pointer.
; CHECK: .local i32, i32, i32, i32{{$}}
[WebAssembly] Implement prolog/epilog insertion and FrameIndex elimination Summary: Use the SP32 physical register as the base for FrameIndex lowering. Update it and the __stack_pointer global var in the prolog and epilog. Extend the mapping of virtual registers to wasm locals to include the physical registers. Rather than modify the target-independent PrologEpilogInserter (which asserts that there are no virtual registers left) include a slightly-modified copy for Wasm that does not have this assertion and only clears the virtual registers if scavenging was needed (which of course it isn't for wasm). Differential Revision: http://reviews.llvm.org/D15344 llvm-svn: 255392
2015-12-12 07:49:46 +08:00
define void @alloca32() {
; CHECK: i32.const [[L1:.+]]=, __stack_pointer
; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
; CHECK-NEXT: i32.const [[L2:.+]]=, 16
; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
%retval = alloca i32
; CHECK: i32.const $push[[L3:.+]]=, 0
; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
store i32 0, i32* %retval
; CHECK: i32.const [[L4:.+]]=, 16
; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L4]]
; CHECK-NEXT: i32.const [[L5:.+]]=, __stack_pointer
; CHECK-NEXT: i32.store [[SP]]=, 0([[L5]]), [[SP]]
ret void
}
; CHECK-LABEL: alloca3264:
[WebAssembly] Print an extra local decl when the user stack pointer is used Differential Revision: http://reviews.llvm.org/D15546 llvm-svn: 255815
2015-12-17 04:43:06 +08:00
; CHECK: .local i32, i32, i32, i32{{$}}
[WebAssembly] Implement prolog/epilog insertion and FrameIndex elimination Summary: Use the SP32 physical register as the base for FrameIndex lowering. Update it and the __stack_pointer global var in the prolog and epilog. Extend the mapping of virtual registers to wasm locals to include the physical registers. Rather than modify the target-independent PrologEpilogInserter (which asserts that there are no virtual registers left) include a slightly-modified copy for Wasm that does not have this assertion and only clears the virtual registers if scavenging was needed (which of course it isn't for wasm). Differential Revision: http://reviews.llvm.org/D15344 llvm-svn: 255392
2015-12-12 07:49:46 +08:00
define void @alloca3264() {
; CHECK: i32.const [[L1:.+]]=, __stack_pointer
; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
; CHECK-NEXT: i32.const [[L2:.+]]=, 16
; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
%r1 = alloca i32
%r2 = alloca double
; CHECK: i32.const $push[[L3:.+]]=, 0
; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
store i32 0, i32* %r1
; CHECK: i64.const $push[[L4:.+]]=, 0
; CHECK: i64.store {{.*}}=, 0([[SP]]), $pop[[L4]]
store double 0.0, double* %r2
; CHECK: i32.const [[L4:.+]]=, 16
; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L4]]
; CHECK-NEXT: i32.const [[L5:.+]]=, __stack_pointer
; CHECK-NEXT: i32.store [[SP]]=, 0([[L5]]), [[SP]]
ret void
}
[WebAssembly] Print an extra local decl when the user stack pointer is used Differential Revision: http://reviews.llvm.org/D15546 llvm-svn: 255815
2015-12-17 04:43:06 +08:00
; CHECK-LABEL: allocarray:
; CHECK: .local i32, i32, i32, i32, i32, i32{{$}}
[WebAssembly] Implement prolog/epilog insertion and FrameIndex elimination Summary: Use the SP32 physical register as the base for FrameIndex lowering. Update it and the __stack_pointer global var in the prolog and epilog. Extend the mapping of virtual registers to wasm locals to include the physical registers. Rather than modify the target-independent PrologEpilogInserter (which asserts that there are no virtual registers left) include a slightly-modified copy for Wasm that does not have this assertion and only clears the virtual registers if scavenging was needed (which of course it isn't for wasm). Differential Revision: http://reviews.llvm.org/D15344 llvm-svn: 255392
2015-12-12 07:49:46 +08:00
define void @allocarray() {
; CHECK: i32.const [[L1:.+]]=, __stack_pointer
; CHECK-NEXT: i32.load [[L1]]=, 0([[L1]])
; CHECK-NEXT: i32.const [[L2:.+]]=, 32
; CHECK-NEXT: i32.sub [[SP:.+]]=, [[L1]], [[L2]]
%r = alloca [5 x i32]
; CHECK: i32.const $push[[L3:.+]]=, 1
; CHECK: i32.store {{.*}}=, 12([[SP]]), $pop[[L3]]
%p = getelementptr [5 x i32], [5 x i32]* %r, i32 0, i32 0
store i32 1, i32* %p
; CHECK: i32.const $push[[L4:.+]]=, 4
; CHECK: i32.const [[L5:.+]]=, 12
; CHECK: i32.add [[L5]]=, [[SP]], [[L5]]
; CHECK: i32.add $push[[L6:.+]]=, [[L5]], $pop[[L4]]
; CHECK: i32.store {{.*}}=, 0($pop[[L6]]), ${{.+}}
%p2 = getelementptr [5 x i32], [5 x i32]* %r, i32 0, i32 1
store i32 1, i32* %p2
; CHECK: i32.const [[L7:.+]]=, 32
; CHECK-NEXT: i32.add [[SP]]=, [[SP]], [[L7]]
; CHECK-NEXT: i32.const [[L8:.+]]=, __stack_pointer
; CHECK-NEXT: i32.store [[SP]]=, 0([[L7]]), [[SP]]
ret void
}
; TODO: test aligned alloc