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277138a332
This is causing compilation timeouts on code with long sequences of local values and calls (i.e. foo(1); foo(2); foo(3); ...). It turns out that code coverage instrumentation is a great way to create sequences like this, which how our users ran into the issue in practice. Intel has a tool that detects these kinds of non-linear compile time issues, and Andy Kaylor reported it as PR37010. The current sinking code scans the whole basic block once per local value sink, which happens before emitting each call. In theory, local values should only be introduced to be used by instructions between the current flush point and the last flush point, so we should only need to scan those instructions. llvm-svn: 329822
119 lines
5.0 KiB
LLVM
119 lines
5.0 KiB
LLVM
; RUN: llc -fast-isel-sink-local-values -mtriple=arm64-apple-darwin -enable-misched=0 -mcpu=cyclone < %s | FileCheck %s
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; RUN: llc -fast-isel-sink-local-values -mtriple=arm64-apple-darwin -enable-misched=0 -mcpu=cyclone -fast-isel < %s | FileCheck %s --check-prefix=FAST
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; RUN: llc -fast-isel-sink-local-values -mtriple=arm64-apple-darwin -enable-misched=0 -mcpu=cyclone -filetype=obj -o %t %s
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; RUN: llvm-objdump -triple arm64-apple-darwin -d %t | FileCheck %s --check-prefix CHECK-ENCODING
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; CHECK-ENCODING-NOT: <unknown>
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; CHECK-ENCODING: mov x16, #281470681743360
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; CHECK-ENCODING: movk x16, #57005, lsl #16
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; CHECK-ENCODING: movk x16, #48879
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; One argument will be passed in register, the other will be pushed on the stack.
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; Return value in x0.
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define void @jscall_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
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entry:
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; CHECK-LABEL: jscall_patchpoint_codegen:
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; CHECK: str x{{.+}}, [sp]
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; CHECK-NEXT: mov x0, x{{.+}}
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; CHECK: Ltmp
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; CHECK-NEXT: mov x16, #281470681743360
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; CHECK: movk x16, #57005, lsl #16
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; CHECK: movk x16, #48879
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; CHECK-NEXT: blr x16
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; FAST-LABEL: jscall_patchpoint_codegen:
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; FAST: str x{{.+}}, [sp]
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; FAST: Ltmp
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; FAST-NEXT: mov x16, #281470681743360
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; FAST-NEXT: movk x16, #57005, lsl #16
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; FAST-NEXT: movk x16, #48879
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; FAST-NEXT: blr x16
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%resolveCall2 = inttoptr i64 281474417671919 to i8*
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%result = tail call webkit_jscc i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 5, i32 20, i8* %resolveCall2, i32 2, i64 %p4, i64 %p2)
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%resolveCall3 = inttoptr i64 244837814038255 to i8*
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tail call webkit_jscc void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 6, i32 20, i8* %resolveCall3, i32 2, i64 %p4, i64 %result)
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ret void
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}
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; Test if the arguments are properly aligned and that we don't store undef arguments.
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define i64 @jscall_patchpoint_codegen2(i64 %callee) {
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entry:
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; CHECK-LABEL: jscall_patchpoint_codegen2:
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; CHECK: orr w[[REG:[0-9]+]], wzr, #0x6
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; CHECK-NEXT: str x[[REG]], [sp, #24]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x4
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; CHECK-NEXT: str w[[REG]], [sp, #16]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x2
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; CHECK-NEXT: str x[[REG]], [sp]
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; CHECK: Ltmp
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; CHECK-NEXT: mov x16, #281470681743360
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; CHECK-NEXT: movk x16, #57005, lsl #16
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; CHECK-NEXT: movk x16, #48879
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; CHECK-NEXT: blr x16
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; FAST-LABEL: jscall_patchpoint_codegen2:
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; FAST: orr [[REG1:x[0-9]+]], xzr, #0x2
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; FAST-NEXT: str [[REG1]], [sp]
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; FAST-NEXT: orr [[REG2:w[0-9]+]], wzr, #0x4
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; FAST-NEXT: str [[REG2]], [sp, #16]
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; FAST-NEXT: orr [[REG3:x[0-9]+]], xzr, #0x6
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; FAST-NEXT: str [[REG3]], [sp, #24]
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; FAST: Ltmp
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; FAST-NEXT: mov x16, #281470681743360
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; FAST-NEXT: movk x16, #57005, lsl #16
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; FAST-NEXT: movk x16, #48879
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; FAST-NEXT: blr x16
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%call = inttoptr i64 281474417671919 to i8*
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%result = call webkit_jscc i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 7, i32 20, i8* %call, i32 6, i64 %callee, i64 2, i64 undef, i32 4, i32 undef, i64 6)
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ret i64 %result
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}
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; Test if the arguments are properly aligned and that we don't store undef arguments.
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define i64 @jscall_patchpoint_codegen3(i64 %callee) {
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entry:
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; CHECK-LABEL: jscall_patchpoint_codegen3:
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; CHECK: mov w[[REG:[0-9]+]], #10
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; CHECK-NEXT: str x[[REG]], [sp, #48]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x8
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; CHECK-NEXT: str w[[REG]], [sp, #36]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x6
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; CHECK-NEXT: str x[[REG]], [sp, #24]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x4
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; CHECK-NEXT: str w[[REG]], [sp, #16]
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; CHECK-NEXT: orr w[[REG:[0-9]+]], wzr, #0x2
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; CHECK-NEXT: str x[[REG]], [sp]
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; CHECK: Ltmp
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; CHECK-NEXT: mov x16, #281470681743360
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; CHECK-NEXT: movk x16, #57005, lsl #16
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; CHECK-NEXT: movk x16, #48879
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; CHECK-NEXT: blr x16
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; FAST-LABEL: jscall_patchpoint_codegen3:
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; FAST: orr [[REG1:x[0-9]+]], xzr, #0x2
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; FAST-NEXT: str [[REG1]], [sp]
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; FAST-NEXT: orr [[REG2:w[0-9]+]], wzr, #0x4
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; FAST-NEXT: str [[REG2]], [sp, #16]
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; FAST-NEXT: orr [[REG3:x[0-9]+]], xzr, #0x6
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; FAST-NEXT: str [[REG3]], [sp, #24]
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; FAST-NEXT: orr [[REG4:w[0-9]+]], wzr, #0x8
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; FAST-NEXT: str [[REG4]], [sp, #36]
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; FAST-NEXT: mov [[REG5:x[0-9]+]], #10
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; FAST-NEXT: str [[REG5]], [sp, #48]
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; FAST: Ltmp
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; FAST-NEXT: mov x16, #281470681743360
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; FAST-NEXT: movk x16, #57005, lsl #16
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; FAST-NEXT: movk x16, #48879
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; FAST-NEXT: blr x16
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%call = inttoptr i64 281474417671919 to i8*
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%result = call webkit_jscc i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 7, i32 20, i8* %call, i32 10, i64 %callee, i64 2, i64 undef, i32 4, i32 undef, i64 6, i32 undef, i32 8, i32 undef, i64 10)
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ret i64 %result
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}
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; CHECK-LABEL: test_i16:
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; CHECK: ldrh [[BREG:w[0-9]+]], [sp]
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; CHECK: add {{w[0-9]+}}, w0, [[BREG]]
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define webkit_jscc zeroext i16 @test_i16(i16 zeroext %a, i16 zeroext %b) {
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%sum = add i16 %a, %b
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ret i16 %sum
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}
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declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...)
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declare i64 @llvm.experimental.patchpoint.i64(i64, i32, i8*, i32, ...)
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